{"title":"Gem \u0026 Metal Testers","description":"\n\u003cp\u003eEnsure the authenticity and quality of your materials with our gem and metal testers. Our selection includes tools for testing diamonds, gemstones, and various metals, providing accurate and reliable results. Trust our high-quality testers to help you verify your materials with confidence.\u003c\/p\u003e","products":[{"product_id":"value-range-gold-testing-stone-62-x-38-x-12mm","title":"Gold Testing Stone 62 x 38 x 12mm","description":"\u003cp\u003e\u003cstrong\u003eGold Testing Stone\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA traditional method of testing the purity of precious metals, in particular gold\u003c\/li\u003e\n\u003cli\u003eConfirm karat markings and purity of gold by gently scrape jewellery item along the stone\u003c\/li\u003e\n\u003cli\u003eUse with an appropriate gold testing acid and apply directly to the stone\u003c\/li\u003e\n\u003cli\u003e Can also be used with test needles to confirm karat markings\u003c\/li\u003e\n\u003cli\u003eAlso works with silver and platinum when correct acid solutions are used\u003c\/li\u003e\n\u003cli\u003eStone measures 62 x 38 x 12mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Value Range","offers":[{"title":"Default Title","offer_id":59397372313934,"sku":"1435 1138A","price":2.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1718939332-64149100.jpg?v=1775920105"},{"product_id":"value-range-round-gold-testing-magnet","title":"Round Gold Testing Magnet","description":"\u003cp\u003e\u003cstrong\u003eRound Gold Testing Magnet\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA precious metal testing magnet with a round wooden handle\u003c\/li\u003e\n\u003cli\u003eCheck the purity of jewellery and metals\u003c\/li\u003e\n\u003cli\u003eIf the metal sticks, it is not gold, silver or platinum\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Value Range","offers":[{"title":"Default Title","offer_id":59397451153742,"sku":"2333 1541","price":5.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1718926393-32814600.jpg?v=1775920500"},{"product_id":"value-range-hearts-arrows-loupe","title":"Hearts \u0026 Arrows Loupe","description":"\u003cp\u003e\u003cstrong\u003eHearts \u0026amp; Arrows Loupe\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHearts \u0026amp; Arrows Loupe for viewing cut gemstones and diamonds\u003c\/li\u003e\n\u003cli\u003eUse to view the ideal cut of the stone by checking for a symmetrical heart or arrow pattern\u003c\/li\u003e\n\u003cli\u003eIncludes 1x blue and 1x red coloured filter\u003c\/li\u003e\n\u003cli\u003eHolding plate is reversible for small and larger stones\u003c\/li\u003e\n\u003cli\u003eLightweight plastic construction\u003c\/li\u003e\n\u003cli\u003eHeight 65mm\u003c\/li\u003e\n\u003cli\u003eWidth 30mm\u003c\/li\u003e\n\u003cli\u003eMade in India\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Value Range","offers":[{"title":"Default Title","offer_id":59397455610190,"sku":"1658A 1085 loupe","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1718926701-58547900.jpg?v=1775920554"},{"product_id":"durston-gold-testing-stone-62mm-x-50mm-x-12mm","title":"Gold Testing Stone 62mm x 50mm x 12mm","description":"\u003cp\u003e\u003cstrong\u003eGold Testing Stone 62mm x 50mm x 12mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDurston Gold Testing Stone: a long established way of testing gold and other precious metals.\u003c\/p\u003e\n\u003cp\u003e62mm x 50mm x 12mm\u003c\/p\u003e","brand":"Durston","offers":[{"title":"Default Title","offer_id":59397621121358,"sku":"DURSTON-2404","price":9.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1718991737-76603800.jpg?v=1775922324"},{"product_id":"value-range-jewellers-gold-testing-needle","title":"Jeweller's Gold Testing Needle","description":"\u003cp\u003e\u003cstrong\u003eJeweller's Gold Testing Needle\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA set of 6 gold testing needles\u003c\/li\u003e\n\u003cli\u003eUse for testing the purity and carat of gold and silver\u003c\/li\u003e\n\u003cli\u003eContains one of each: 8K, 10K, 12K, 14K, 18K, 999 Silver\u003c\/li\u003e\n\u003cli\u003eUse with a touchstone (sold separately)\u003c\/li\u003e\n\u003cli\u003eA handy tool for jewellers and goldsmiths\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Value Range","offers":[{"title":"Default Title","offer_id":59397974425934,"sku":"920","price":35.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1725285309-45865200.jpg?v=1775926138"},{"product_id":"presidium-replacement-probe-pen-for-pgt-ii-pdt-ii","title":"Presidium Replacement Probe Pen for PGT II \u0026 PDT II","description":"\u003cp\u003e\u003cstrong\u003ePresidium Replacement Probe Pen for PGT II \u0026amp; PDT II\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTitanium Probe Pen for replacement if your probe pen is missing or damaged. For use with Presidium Gem Tester II (PGT II) and Duo Tester II (PDT II) only.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59397997429070,"sku":"PRESIDIUM-PS2-2","price":69.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719005826-47651300.jpg?v=1775926392"},{"product_id":"presidium-analogue-gemstone-dial-gauge-pdg","title":"Presidium Analogue Gemstone Dial Gauge PDG","description":"\u003cp\u003e\u003cstrong\u003ePresidium Analogue Gemstone Dial Gauge PDG\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003ePresidium Dial Gauge measures from 0.0 to 23.0mm in 0.1mm divisions. The PDG features an easy-to-read millimetre and carat scale, and is only dial gauge in the industry that combines dual measurements for gemstones in millimetres with corresponding carat conversion for round brilliant-cut gemstones. PDG also contains an inner scale display for US ring size measurements.\u003c\/p\u003e\n\u003cp\u003eThe PDG is manufactured to the highest quality and features a patented anvil with a non-metallic lubrication-free rack and pinion technology that resist wear and tear and maintain its accuracy.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures from 0.0 to 23.0mm\u003c\/li\u003e\n\u003cli\u003eAccuracy: 0.1mm \/ Tolerance: 0.02mm with simple zero realignment\u003c\/li\u003e\n\u003cli\u003eAnalogue gauge with mm\/ct\/ring size display\u003c\/li\u003e\n\u003cli\u003ePatented anvil\u003c\/li\u003e\n\u003cli\u003eSmooth slider mechanism\u003c\/li\u003e\n\u003cli\u003ePortable and lightweight\u003c\/li\u003e\n\u003cli\u003eCompact protective case included\u003c\/li\u003e\n\u003cli\u003eAttachment for high setting jewelry provided\u003c\/li\u003e\n\u003cli\u003ePresidium Gemstone Weight Estimation Table provided\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBenefits\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstantly converts millimeter readings to carats for round brilliant-cut gemstones\u003c\/li\u003e\n\u003cli\u003eMeasures gemstone dimensions with accuracy to 0.01mm\u003c\/li\u003e\n\u003cli\u003eClear and easy-to-read analog display with readings in mm\/ct\/ring size\u003c\/li\u003e\n\u003cli\u003eLight and portable instrument that can be used anywhere\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis product comes with a protective carrying case box.\u003c\/p\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 97mm (3.82 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 61mm (2.40 inches)\u003c\/li\u003e\n\u003cli\u003eHeight:16mm (0.63 inches)\u003c\/li\u003e\n\u003cli\u003eWeight (without batteries): 100grams (3.52oz)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398067683662,"sku":"PRESIDIUM-PDG","price":219.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719012425-95877000.jpg?v=1775927042"},{"product_id":"presidium-multitester-iii-for-testing-diamonds-moissanites-pmut-iii","title":"Presidium MultiTester III for Testing Diamonds \u0026 Moissanites PMUT III","description":"\u003cp\u003e\u003cstrong\u003ePresidium MultiTester III for Testing Diamonds \u0026amp; Moissanites PMUT III\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003eThe Presidium Multi Tester III (PMuT III) is the all-in-one instrument that reliably and accurately verifies the authenticity of colorless diamonds against moissanites and other diamond simulants such as colorless sapphire, colorless spinel, cubic zirconia, zircon, etc. Showcasing a new ergonomic design with a rubberized anti-slip grip and an all-around display for easy readability, PMuT III promises greater ease of handling and reading of results whilst testing.\u003c\/p\u003e\n\u003cp\u003ePresidium's Multi Tester was the world’s first tester that tests for both colorless diamonds and moissanites in a single instrument. It's measuring probes and electronics circuitry detect data from the gemstone being tested via a customized micro-controller, identifying colorless diamonds and moissanites based on their thermal and electrical properties.\u003c\/p\u003e\n\u003cp\u003ePMuT III has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, the PMuT III tests colorless diamonds as small as 0.02ct.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRetractable thermoelectric probe tip that ensures constant pressure between probe and gemstone\u003c\/li\u003e\n\u003cli\u003eIndustry’s thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct\u003c\/li\u003e\n\u003cli\u003eMetal alert buzzer to ensure that probe tip is in contact with gemstone during testing\u003c\/li\u003e\n\u003cli\u003eErgonomic design with rubberized anti-slip grip for better handling during testing\u003c\/li\u003e\n\u003cli\u003e180-degree multi-viewing LED display\u003c\/li\u003e\n\u003cli\u003eCatered to both left-handed and right-handed users alike\u003c\/li\u003e\n\u003cli\u003eInternational voltage compatibility\u003c\/li\u003e\n\u003cli\u003eLow batter indicator\u003c\/li\u003e\n\u003cli\u003eAutomatic power off\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBenefits\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIdentifies metals, simulants, moissanites, and colorless diamonds instantly\u003c\/li\u003e\n\u003cli\u003eEnhanced accuracy and consistency with improved functionality and usability\u003c\/li\u003e\n\u003cli\u003eAccurate testing on diamonds as small as 0.02ct\u003c\/li\u003e\n\u003cli\u003eEnhanced functionality and usability\u003c\/li\u003e\n\u003cli\u003eClear and visible display for ease of reading measurements\u003c\/li\u003e\n\u003cli\u003eNo waiting time between tests\u003c\/li\u003e\n\u003cli\u003eSimple and easy to use\u003c\/li\u003e\n\u003cli\u003eLight and portable for convenience\u003c\/li\u003e\n\u003cli\u003eComes with protective carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePower \u0026amp; Battery\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3 x AAA alkaline batteries (approximately 7 hours of continuous use)\u003c\/li\u003e\n\u003cli\u003eAC port to be used with appropriate Presidium Power Adaptor (not included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRecommended Operating Conditions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptimal Operating Temperature: 18°C – 27°C (65°F – 80°F)\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: 10°C – 51°C (50°F – 124°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 165mm (6.50 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 25mm (0.95 inches)\u003c\/li\u003e\n\u003cli\u003eHeight: 40mm (1.57 inches)\u003c\/li\u003e\n\u003cli\u003eWeight (without batteries): 54 grams (1.90 oz)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398074827086,"sku":"PRESIDIUM-PMUTIII","price":310.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719013461-36753500.jpg?v=1775927126"},{"product_id":"gemometrics-gem-pen-dark-room-gemometrics","title":"Gem Pen Dark Room Gemometrics","description":"\u003cp\u003e\u003cstrong\u003eGem Pen Dark Room Gemometrics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWelcome to your Darkroom\u003c\/strong\u003e\u003cbr\u003eGemPen® Darkroom allows the professional user to create a portable environment, making it easier to more accurately interpret results. This complimentary tool contains a UVB protective filter viewing lens to better observe fluorescence and phosphorescence effects in natural, synthetic and treated gemstones. The Darkroom allows the user to work hands-free with their GemPen® and has three variable functions: screening single stones, multiple stones and rings.\u003c\/p\u003e\n\u003cp\u003eFor more information plus operating instructions, \u003ca href=\"https:\/\/gemometrics.com\/2020\/03\/10\/introducing-darkroom-a-brand-new-product-by-gemometrics\/\"\u003eplease click here.\u003c\/a\u003e\u003c\/p\u003e","brand":"Gemometrics","offers":[{"title":"Default Title","offer_id":59398075121998,"sku":"GemPen 11601","price":300.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719013557-57260100.png?v=1775927132"},{"product_id":"presidium-refractive-index-metre-ii-for-diamonds-gemstones-prim-ii","title":"Presidium Refractive Index Metre II for Diamonds \u0026 Gemstones PRIM II","description":"\u003cp\u003e\u003cstrong\u003ePresidium Refractive Index Metre II for Diamonds \u0026amp; Gemstones PRIM II\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003eBy measuring the quantity of light reflected through the stone, the Presidium Refractive Index Meter II (PRIM II) is able to separate diamonds, moissanites and other colored gemstones via the Refractive Index (R.I) of these polished gemstones.\u003c\/p\u003e\n\u003cp\u003eUnlike a traditional refractometer that has a limited range of R.I measurements and thus cannot be easily used to measure R.I of certain gemstones, the PRIM II is able to measure a wider range of R.I value from 1.000 to ~3.000, therefore covering the commonly known gemstones in the market and can also measure RI of diamonds, moissanites and other diamond simulants such as high zircon, strontium titanite, etc.\u003c\/p\u003e\n\u003cp\u003eIn addition, a fast and clean test can be easily done with the PRIM II, without the inconvenience and messiness of R.I liquid used in the traditional refractometer.\u003c\/p\u003e\n\u003cp\u003eThe PRIM II also comes with a downloadable software that provides a database of more than 50 gemstones with their various properties and possible origins, and a program that enables the user to enter known properties of the gemstone such as color, S.G. value, hardness, etc to ascertain what possible gemstone it is from the database information.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePinhole-sized light reflectivity measure on wide oval platform\u003c\/li\u003e\n\u003cli\u003eCover cup with blackout interior to ensure light reflectivity measure is accurate\u003c\/li\u003e\n\u003cli\u003eInstantly displays direct R.I reading on digital index LED display panel\u003c\/li\u003e\n\u003cli\u003eIn-built Refractive Chart for referencing diamonds and simulants above R.I reading of 1.8\u003c\/li\u003e\n\u003cli\u003eIn-built 8-piece gemstone holder\u003c\/li\u003e\n\u003cli\u003ePocket-sized Refractive Index Chart pull-out with R.I readings for 55 stones\u003c\/li\u003e\n\u003cli\u003ePRIM II complementary software to help users find out the possible coloured gemstone using data on various gemstone properties\u003c\/li\u003e\n\u003cli\u003eGemstone Dictionary in software with 57 gemstones’ properties (R.I, Color, Hardness, S.G. Value), country of origin and related information\u003c\/li\u003e\n\u003cli\u003eUSB port for alternative power source and connectivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBenefits\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEstimates diamonds, moissanites and gemstones’ R.I instantly, thereby allowing identification of possible stones\u003c\/li\u003e\n\u003cli\u003eAble to test wide range of R.I values from 1.000 – 3.000, more than traditional refractometer\u003c\/li\u003e\n\u003cli\u003eNo need for messy R.I liquids\u003c\/li\u003e\n\u003cli\u003eTests on transparent gemstones, with flat polished surfaces\u003c\/li\u003e\n\u003cli\u003eContinual elimination of possible gemstones via software program through input of known values such as R.I, color, hardness and S.G.\u003c\/li\u003e\n\u003cli\u003eIdeal for separation of gemstones\u003c\/li\u003e\n\u003cli\u003eClear and visible display for ease of reading results\u003c\/li\u003e\n\u003cli\u003eNo waiting time between tests\u003c\/li\u003e\n\u003cli\u003eSimple and easy to use\u003c\/li\u003e\n\u003cli\u003eLight and compact tester\u003c\/li\u003e\n\u003cli\u003eRuns on batteries or with recommended Presidium AC adaptor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePower \u0026amp; Battery\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 9V alkaline battery (approximately 3 hours of continuous use)\u003c\/li\u003e\n\u003cli\u003eUSB port to be used with appropriate Presidium Power Adaptor (not included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRecommended Operating Conditions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptimal Operating Temperature: 18°C – 27°C (65°F – 80°F)\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: 10°C – 51°C (50°F – 124°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 140mm (5.50 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 80mm (3.15 inches)\u003c\/li\u003e\n\u003cli\u003eHeight:33mm (1.30 inches)\u003c\/li\u003e\n\u003cli\u003eWeight (without batteries): 140grams (4.94 oz)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398075449678,"sku":"PRESIDIUM-PRIMII","price":324.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719013747-60975900.jpg?v=1775927136"},{"product_id":"presidium-digital-gem-indicator-for-coloured-gemstones-pgi","title":"Presidium Digital Gem Indicator for Coloured Gemstones PGI","description":"\u003cp\u003e\u003cstrong\u003ePresidium Digital Gem Indicator for Coloured Gemstones PGI\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003eThe Presidium Gem Indicator, the only handheld tester in the industry specifically for coloured gemstones, indicates up to 31 different types of coloured gems based on their thermal conductivity and even features a colour input function that allows users to select from a range of 12 common colours, thereby achieving more accurate results. With an easy-to-read clear digital LED screen, this smart thermal tester also comes with the Presidium patented refined changeable probe tip, which ensures minimal equipment downtime.\u003c\/p\u003e\n\u003cp\u003eThe Presidium Gem Indicator is an enhanced and more convenient handheld version of the revolutionary Presidium Gem Tester\/Coloured Stone Estimator.\u003c\/p\u003e\n\u003cp\u003eThe Presidium Gem Indicator probe consists of two linked thermometers; one which is heated electronically, while the other is cooled by the gemstone being tested. The difference in temperature creates an electrical output, which is then amplified and displayed on the new digital organic LED display.\u003c\/p\u003e\n\u003cp\u003eIt is simple to use, easy to maintain, and quick in giving you intelligent results about your coloured gemstones.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTests an extended range of 31 different gemstones\u003c\/li\u003e\n\u003cli\u003eColour input function to further separate gemstones for more accuracy\u003c\/li\u003e\n\u003cli\u003eEasy-to-read results on clear digital LED screen\u003c\/li\u003e\n\u003cli\u003eQuick results in less than 6 seconds\u003c\/li\u003e\n\u003cli\u003eIndustry’s thinnest probe tip (0.45mm) for testing gemstones from 0.02ct\u003c\/li\u003e\n\u003cli\u003ePatented refined probe tip\u003c\/li\u003e\n\u003cli\u003eMetal buzzer alert and low battery indicator\u003c\/li\u003e\n\u003cli\u003eSleek chrome-brushed ergonomic grip\u003c\/li\u003e\n\u003cli\u003eUSB port for alternative power source and connectivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBenefits\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAlso able to distinguish diamonds from other coloured gemstones\u003c\/li\u003e\n\u003cli\u003eSelection of 12 common colours available for more accurate results\u003c\/li\u003e\n\u003cli\u003eRetractable thermoelectric probe tip that ensures constant pressure between probe and gemstone, for enhanced accuracy\u003c\/li\u003e\n\u003cli\u003eSlim, light, portable and handheld for convenience\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePower \u0026amp; Battery\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3 x AAA alkaline batteries (approximately 3 hours of continuous use)\u003c\/li\u003e\n\u003cli\u003eUSB port to be used with USB cable and appropriate Presidium Universal USB Power Adaptor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRecommended Operating Conditions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptimal Operating Temperature: 23°C – 27°C (73°F – 80°F)\u003c\/li\u003e\n\u003cli\u003eAdvised to run the calibration process if you are operating in ambient temperatures of 20°C – 33°C (68°F-91°F).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 170mm (6.69 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 31mm (1.20 inches)\u003c\/li\u003e\n\u003cli\u003eHeight:28mm (1.10 inches)\u003c\/li\u003e\n\u003cli\u003eWeight (without batteries): 60.0grams (2.11 oz)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398076432718,"sku":"PRESIDIUM-PGI","price":323.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719013874-91087300.jpg?v=1775927144"},{"product_id":"presidium-digital-electronic-gemstone-gauge-pegg","title":"Presidium Digital Electronic Gemstone Gauge PEGG","description":"\u003cp\u003e\u003cstrong\u003ePresidium Digital Electronic Gemstone Gauge PEGG\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003ePresidium Electronic Gemstone Gauge is the industry’s first digital gemstone gauge and remains the only reliable one able to convert gemstone dimensions to estimated carat weight for round brilliant-cuts.\u003c\/p\u003e\n\u003cp\u003eUtilizing solid-state electronics to accurately measure up to 1\/100mm, this gauge also features a clear and visible high-tech digital display for ease of reading measurements. Its touch button zeroing allows the convenience of resetting to zero at any measurement point.\u003c\/p\u003e\n\u003cp\u003eA high-setting jewellery attachment also allows easy measurement of mounted gemstones and its subsequent conversion to carat weight.\u003c\/p\u003e\n\u003cp\u003eThe Presidium Electronic Gemstone Gauge also includes the Presidium Gemstone Weight Estimation Table, which corresponds millimetre conversion to carat weight estimation.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures from 0.0 to 25.0mm\u003c\/li\u003e\n\u003cli\u003eAccuracy: 0.01mm \/ Tolerance: 0.02mm\u003c\/li\u003e\n\u003cli\u003eDirect digital millimetre\/carat readout\u003c\/li\u003e\n\u003cli\u003eTouch button zeroing that allows the convenience of resetting to zero at any measurement point\u003c\/li\u003e\n\u003cli\u003eSmooth slider mechanism\u003c\/li\u003e\n\u003cli\u003eLow battery consumption\u003c\/li\u003e\n\u003cli\u003ePortable and lightweight\u003c\/li\u003e\n\u003cli\u003eAttachment for high-setting jewellery provided as accessory\u003c\/li\u003e\n\u003cli\u003ePresidium Gemstone Weight Estimation Table provided\u003c\/li\u003e\n\u003cli\u003eCompact protective case included with auto-magnetic power off when placed in carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBenefits\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstantly converts millimetre readings to carats for round brilliant-cut gemstones\u003c\/li\u003e\n\u003cli\u003eMeasures gemstone dimensions with accuracy to 0.01mm\u003c\/li\u003e\n\u003cli\u003eClear and visible digital display with readings in mm or ct\u003c\/li\u003e\n\u003cli\u003eLight and portable instrument that can be used anywhere\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePower \u0026amp; Battery\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 3V battery (provided with product, approximately 5000 hours of battery life)\u003c\/li\u003e\n\u003cli\u003eThis product comes with a protective carrying case box that has an auto-magnetic power off when gauge is placed back in the carrying case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 97mm (3.82 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 61mm (2.40 inches)\u003c\/li\u003e\n\u003cli\u003eHeight:16mm (0.63 inches)\u003c\/li\u003e\n\u003cli\u003eWeight (without batteries): 110grams (3.88oz)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398076858702,"sku":"PRESIDIUM-PEGG","price":366.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719013934-41668400.jpg?v=1775927148"},{"product_id":"presidium-gem-computer-gauge-for-gemstones-pgcg","title":"Presidium Gem Computer Gauge for Gemstones PGCG","description":"\u003cp\u003e\u003cstrong\u003ePresidium Gem Computer Gauge for Gemstones PGCG\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003ePresidium Gem Computer Gauge measures the dimensions and estimates the weight of loose and mounted gemstones with precision, speed, and ease.\u003c\/p\u003e\n\u003cp\u003eIt is the only gauge in the industry that is able to give direct estimation of the weight of various gemstone of a range of 9 popular cuts, giving users the convenience of not having to dismount their gemstones from its jewellery settings.\u003c\/p\u003e\n\u003cp\u003eAfter entering the weight and the measurements of a gemstone, the Gem Computer Gauge is alternatively also able to be used to estimate the identity of the gemstone, by computing its S.G. value and referencing the internal stored database.\u003c\/p\u003e\n\u003cp\u003eWith PGCG’s computer interfacing, gemstone measurement records can be easily imported and printed. PGCG also comes with a software that lists the S.G. value, R.I. value, and hardness measurements of 133 common gemstones in the market for handy reference.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures from 0.0 to 25.0mm\u003c\/li\u003e\n\u003cli\u003eAccuracy: 0.01mm \/ Tolerance: 0.02mm\u003c\/li\u003e\n\u003cli\u003eDigital mm\/ct display\u003c\/li\u003e\n\u003cli\u003eAutomatically shut off when idle for 10 minutes\u003c\/li\u003e\n\u003cli\u003eAuto-magnetic shut-off when placed in carrying case\u003c\/li\u003e\n\u003cli\u003eComputer interface display with USB (Universal Serial Bus) connectivity\u003c\/li\u003e\n\u003cli\u003eAttachment for high setting jewellery provided\u003c\/li\u003e\n\u003cli\u003eSpecific Gravity (S.G.) dictionary for quick and easy reference included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBenefits\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan be used to give direct carat conversion on different types of gemstones of a range of 9 different popular cuts\u003c\/li\u003e\n\u003cli\u003eDirect carat conversion for round brilliant-cut diamonds\u003c\/li\u003e\n\u003cli\u003eNo need for dismounting of the gemstone to weigh its carat weight\u003c\/li\u003e\n\u003cli\u003eMeasures actual gemstone dimensions and estimates gemstone weight and identity\u003c\/li\u003e\n\u003cli\u003eAble to estimate identity of 74 different gemstones\u003c\/li\u003e\n\u003cli\u003eAccurate measurement to 2 decimal places\/0.01mm\u003c\/li\u003e\n\u003cli\u003eClear and visible display for ease of reading measurements\u003c\/li\u003e\n\u003cli\u003eLight and portable instrument that can be used anywhere\u003c\/li\u003e\n\u003cli\u003ePC connectivity for ease of importing and printing measurement results\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePower \u0026amp; Battery\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 3V battery (provided with product)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 97mm (3.82 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 61mm (2.40 inches)\u003c\/li\u003e\n\u003cli\u003eHeight:16mm (0.63 inches)\u003c\/li\u003e\n\u003cli\u003eWeight (without batteries): 120grams (4.23oz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398077350222,"sku":"PRESIDIUM-PGCG","price":383.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719014050-72243300.jpg?v=1775927152"},{"product_id":"presidium-duo-tester-ii-for-diamonds-gemstones-pdt-ii","title":"Presidium Duo Tester II for Diamonds \u0026 Gemstones PDT II","description":"\u003cp\u003e\u003cstrong\u003ePresidium Duo Tester II for Diamonds \u0026amp; Gemstones PDT II\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003ePresidium Duo Tester II (PDT II) is the only comprehensive tool on the market that combines two proven testing methods for gemstones. PDT II differentiates diamonds from its simulants based on both their thermal conductivity and reflective indexes. Coated gemstones can also be generally tested with the PDT II.\u003c\/p\u003e\n\u003cp\u003eThe Presidium Duo Tester II comes with a probe pen that has a retractable probe tip which ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, PDT II tests gemstones as small as 0.02ct.\u003c\/p\u003e\n\u003cp\u003e*Does not differentiate between natural and synthetic coloured gemstones.\u003c\/p\u003e\n\u003cp\u003eFeatures\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAssisted Thermal Calibration (ATC)\u003c\/li\u003e\n\u003cli\u003eBuilt-in Glass and Calibration (CAL) test discs for reference\u003c\/li\u003e\n\u003cli\u003eRetractable thermoelectric probe tip that ensures constant pressure between probe and gemstone\u003c\/li\u003e\n\u003cli\u003eIndustry’s thinnest probe tip (0.6mm) for testing gemstones as small as 0.02ct\u003c\/li\u003e\n\u003cli\u003eMetal alert buzzer to ensure that probe tip is in contact with gemstone during testing\u003c\/li\u003e\n\u003cli\u003eLarge easy-to-read analog dial with 16 colored gemstones\u003c\/li\u003e\n\u003cli\u003eDigital index LED display for reading of reflectivity value of the gemstone (based on conversion from refractive index)\u003c\/li\u003e\n\u003cli\u003eBuilt-in simulant reflective properties reference chart\u003c\/li\u003e\n\u003cli\u003eDiamond simulant set for calibration of reflectivity meter (optional item provided by Presidium)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBenefits\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTests gemstones using dual tests of thermal and reflectivity properties to know more about the gemstone\u003c\/li\u003e\n\u003cli\u003eAccurate and consistent tests for both indoors and outdoors operation\u003c\/li\u003e\n\u003cli\u003eTests gemstones as small as 0.02ct\u003c\/li\u003e\n\u003cli\u003eClear and visible display for ease of reading measurements for both thermal and reflective test\u003c\/li\u003e\n\u003cli\u003eNo waiting time between tests\u003c\/li\u003e\n\u003cli\u003eSimple and easy to use\u003c\/li\u003e\n\u003cli\u003eRuns on 5 AA batteries or with recommended Presidium AC adaptor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePower \u0026amp; Battery\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e5 x AA alkaline batteries (approximately 3 hours of continuous use)\u003c\/li\u003e\n\u003cli\u003eAC port to be used with appropriate Presidium Power Adaptor (not included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRecommended Operating Conditions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptimal Operating Temperature: 18°C – 27°C (65°F – 80°F)\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: 10°C – 51°C (50°F – 124°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 172mm (6.77 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 77mm (3.03 inches)\u003c\/li\u003e\n\u003cli\u003eHeight: 85mm (3.34 inches)\u003c\/li\u003e\n\u003cli\u003eWeight (without batteries): 260grams (9.17 oz)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398083150158,"sku":"PRESIDIUM-PDTII","price":454.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719014754-76627500.jpg?v=1775927193"},{"product_id":"gemometrics-gempen-lens-filter-kit-for-diamond-screener","title":"GemPen Lens Filter Kit for Diamond Screener","description":"\u003cp\u003e\u003cstrong\u003eGemPen Lens Filter Kit for Diamond Screener\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Filter Kit contains all the additional Filters including Filter 2, 3 and the LW Filter 4. This is the Add-on to GemPen® Diamond Screener which upgrades it to GemPen® Premium.\u003c\/p\u003e\n\u003cp\u003eThese Filters in combination with the Filter 1 (included with GemPen® Diamond Screener) offers the professional gemmological user the means to screen Diamonds, Rubies \u0026amp; Sapphires for synthetics and treatments by searching for discrepancies in the fluorescence and phosphorescence for further analysis. Filters 2, 3 and 4 are used in combination with Filter 1 to screen for synthetics and flame-fusion (Verneuil), as well as heat, beryllium, cobalt, glass fillings and most other treatments of Corundum.\u003c\/p\u003e\n\u003cp\u003eThe User Guide can be downloaded \u003ca href=\"\/wp-content\/uploads\/GemPen%C2%AE-Fluorescence-Colour-Map-User-Guide-Updated-2018-12-12.pdf\"\u003ehere\u003c\/a\u003e\u003c\/p\u003e","brand":"Gemometrics","offers":[{"title":"Default Title","offer_id":59398086558030,"sku":"GemPen FK50","price":810.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719015083-91654200.png?v=1775927231"},{"product_id":"gemometrics-gempen-diamond-screener","title":"GemPen Diamond Screener","description":"\u003cp\u003e\u003cstrong\u003eGemPen Diamond Screener\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe GemPen® with complementary aids can make it possible for the user to identify sophisticated synthetic diamonds on the go, saving valuable time in the valuation process. The key word here is “on the go” as it is unusual to get reliable results for certain types of synthetic diamonds without sending them to a gemological institute for validation, something that can take weeks.\u003c\/p\u003e\n\u003cp\u003eGemological equipment such as the GemPen® have become necessary in recent decades because of the large amounts of synthetically manufactured diamonds in circulation that create uncertainty in the valuation process, as synthetic diamonds can be chemically, physically and optically identical to naturally occurring ones.\u003c\/p\u003e\n\u003cp\u003eMost consumers are not aware that their jewellery can contain lab-made diamonds that are manufactured in two weeks, instead of natural diamonds that are formed in the earth for millions of years.\u003c\/p\u003e\n\u003cp\u003eWhen testing diamonds with the GemPen, you can determine if a diamond is a natural, CVD or HTHP stone. The GemPen will also highlight filled inclusions on diamonds.\u003c\/p\u003e\n\u003cp\u003eThe light emitted by the filter will provoke a fluorescent light to be emitted by the HTHP\/CVD diamond but the natural diamond will remain unchanged. It is recommended that you purchase the LW Filter 4 which will help you distinguish between a natural fluorescing diamond and a synthetic one\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDiamond Verification Instrument\u003c\/li\u003e\n\u003cli\u003eIndicates natural, HPHT \u0026amp; CVD lab-created diamonds with Filter 1 (included)\u003c\/li\u003e\n\u003cli\u003eIndicates HPHT colour enhancement treatment on natural diamonds\u003c\/li\u003e\n\u003cli\u003eWorks on rough, polished \u0026amp; mounted diamonds\u003c\/li\u003e\n\u003cli\u003eAll diamond sizes: 0.01ct-10.00+\u003c\/li\u003e\n\u003cli\u003eDiamond colour range: D-M\u003c\/li\u003e\n\u003cli\u003eScreens 100’s of stones in a matter of minutes\u003c\/li\u003e\n\u003cli\u003eFull spectrum Xenon UV light source\u003c\/li\u003e\n\u003cli\u003eUSOF – Ultra Spectrum Optical Filtering technology\u003c\/li\u003e\n\u003cli\u003eUpgradable by purchasing additional filters\u003c\/li\u003e\n\u003cli\u003eTravel Case \/ Darkroom to check diamonds on the go\u003c\/li\u003e\n\u003cli\u003ePortable pocket size \/ purse size design\u003c\/li\u003e\n\u003cli\u003eLithium-ion battery powered \u0026amp; USB rechargeable\u003c\/li\u003e\n\u003cli\u003eAccess to GemPen® Academy\u003c\/li\u003e\n\u003cli\u003eInnovated by a Gemmologist for Gemmologists\u003c\/li\u003e\n\u003cli\u003eApplications: in the field, wholesale diamond buyers, gemmological labs \u0026amp; educational institutes, appraisal services providers, screening while shopping at trade shows \u0026amp; when receiving set goods, pawn shops, auction houses, jewellery repair \u0026amp; custom design houses, jewellers, all natural \u0026amp; lab created diamond retailers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe recommend adding the Filter 4 which will help you distinguish between a natural fluorescing diamond and a lab-created diamond.\u003c\/p\u003e\n\u003cp\u003eGemPen® Diamond Screener is used to screen diamonds for naturals, HPHT and CVD grown synthetics and includes Filter 1. It also gives indications on treatments such as HPHT treatment of natural diamond. It is possible to later upgrade your GemPen® Diamond Screener by buying the additional Filter Kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHexagonal Pen Grip\u003c\/li\u003e\n\u003cli\u003eDiamond Filter Lens 1.\u003c\/li\u003e\n\u003cli\u003eUSB-C Standard For Recharging\u003c\/li\u003e\n\u003cli\u003eDust \u0026amp; Rain Proof\u003c\/li\u003e\n\u003cli\u003eShock resistant, with protective casing\u003c\/li\u003e\n\u003cli\u003eHighly Durable\u003c\/li\u003e\n\u003cli\u003eEasy to use\u003c\/li\u003e\n\u003cli\u003eHard case designed to be used as darkroom\u003cstrong\u003eCapability:\u003c\/strong\u003eEnables professional users to validate the identity of diamonds\u003cbr\u003eCan distinguish natural from synthetic diamonds\u003cbr\u003eCan identify treatment of diamonds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDownloads:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/wp-content\/uploads\/GemPen%C2%AE-User-Guide-Quick-Start-Updated-2019-02-08.pdf\"\u003eUser Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/wp-content\/uploads\/GemPen%C2%AE-QA.pdf\"\u003eIntroduction to GemPen\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Gemometrics","offers":[{"title":"Default Title","offer_id":59398104613198,"sku":"GemPen GP100-EN","price":2106.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1719017255-95209500.png?v=1775927399"},{"product_id":"presidium-gem-tester-for-coloured-gemstones-pgt-ii","title":"Presidium Gem Tester for Coloured Gemstones PGT II","description":"\u003cp\u003e\u003cstrong\u003ePresidium Gem Tester for Coloured Gemstones PGT II\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn its second generation, the Presidium Gem Tester II provides a quick and easy way to identify diamonds\/moissanites and separates up to 16 common colored gemstones based on their thermal conductivity with its clear and direct analog display. A newly redesigned inbuilt calibration reference and adjustment provides ease of operation both indoors and outdoors.\u003c\/p\u003e\n\u003cp\u003eThe Presidium Gem Tester II features the industry’s thinnest retractable probe tip (0.6mm) for testing colored gemstones as small as 0.02 carats. Coated gemstones can also be generally tested with PGT II.\u003c\/p\u003e\n\u003cp\u003e*Does not differentiate between natural and synthetic colored gemstones.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eFeatures:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRetractable thermoelectric probe tip that ensures constant pressure between probe and gemstone\u003c\/li\u003e\n\u003cli\u003eIndustry’s thinnest probe tip (0.6mm) for testing gemstones as small as 0.02 carats\u003c\/li\u003e\n\u003cli\u003eMetal alert buzzer to ensure probe tip is in contact with gemstone during testing\u003c\/li\u003e\n\u003cli\u003eClear and easy-to-read analog dial\u003c\/li\u003e\n\u003cli\u003eCan differentiate between 16 types of gemstones\u003c\/li\u003e\n\u003cli\u003eBuilt-in Glass and Calibration (CAL) test discs for reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eBenefits:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIdentifies diamonds\/moissanites and most common colored gemstones\u003c\/li\u003e\n\u003cli\u003eTests both polished and unpolished gemstones\u003c\/li\u003e\n\u003cli\u003eTests gemstones as small as 0.02 carats\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable results every time\u003c\/li\u003e\n\u003cli\u003eNo waiting time between tests\u003c\/li\u003e\n\u003cli\u003eSimple and easy to use\u003c\/li\u003e\n\u003cli\u003eRuns on 2 AA batteries or adaptor (included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003ePower \u0026amp; Battery:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2 x AA alkaline batteries (approximately 3 hours of continuous use)\u003c\/li\u003e\n\u003cli\u003eAC port to be used with appropriate Presidium Power Adaptor (included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eRecommended Operating Conditions:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptimal Operating Temperature: 18°C – 27°C (65°F – 80°F)\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: 10°C – 51°C (50°F – 124°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDimensions:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 125mm (4.93 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 90mm (3.55 inches)\u003c\/li\u003e\n\u003cli\u003eHeight: 70mm (2.76 inches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eWeight:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWeight (without batteries): 220grams (7.76 oz)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398694633806,"sku":"Presidium PGT II","price":277.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1747725363-92143600.png?v=1775931092"},{"product_id":"presidium-diamond-mate-diamond-tester-pdmt-a","title":"Presidium Diamond Mate Diamond Tester PDMT-A","description":"\u003cp\u003e\u003cstrong\u003ePresidium Diamond Mate Diamond Tester PDMT-A\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Presidium Diamond Mate Tester (PDMT) has a retractable probe tip that ensures consistent pressure against the gemstone during testing for more reliable results. With the industry’s thinnest probe tip size of 0.6mm, PDMT tests diamonds as small as 0.02ct. Test results are instantly indicated by an LED light and continuous audible beep.\u003c\/p\u003e\n\u003cp\u003eIt comes in 2 variants, either powered by 3 AAA alkaline batteries (Presidium Diamond Mate-A\/PDMT-A) or by an inset rechargeable battery (Presidium Diamond Mate-C\/PDMT-C). PDMT-C comes with rechargeable battery in the unit and an AC adaptor (120 or 230 volts).\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eFeatures:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRetractable thermoelectric probe tip for enhanced accuracy that ensures constant pressure between probe and gemstone\u003c\/li\u003e\n\u003cli\u003eIndustry’s thinnest probe tip (0.6mm) for testing diamonds as small as 0.02ct\u003c\/li\u003e\n\u003cli\u003eMetal alert buzzer to ensure that probe tip is in contact with stone during testing\u003c\/li\u003e\n\u003cli\u003eNo waiting time between tests\u003c\/li\u003e\n\u003cli\u003eClear and easy-to-read LED display\u003c\/li\u003e\n\u003cli\u003eRechargeable batteries\u003c\/li\u003e\n\u003cli\u003eLow battery indicator\u003c\/li\u003e\n\u003cli\u003eLow battery consumption\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"text-decoration: underline;\"\u003eBenefits:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eVerifies authenticity of diamonds instantly\u003c\/li\u003e\n\u003cli\u003eTests both polished and unpolished gemstones\u003c\/li\u003e\n\u003cli\u003eTests diamonds as small as 0.02ct\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable results every time\u003c\/li\u003e\n\u003cli\u003eNo waiting time between tests\u003c\/li\u003e\n\u003cli\u003eClear and visible display for ease of reading measurements\u003c\/li\u003e\n\u003cli\u003eSimple and easy to use\u003c\/li\u003e\n\u003cli\u003eLight and portable for convenience\u003c\/li\u003e\n\u003cli\u003eComes with protective carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003ePower \u0026amp; Battery:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e3 x AAA alkaline batteries (approximately 7 hours of continuous use)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eRecommended Operating Conditions:\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eOptimal Operating Temperature: 18°C – 27°C (65°F – 80°F)\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: 10°C – 51°C (50°F – 124°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eDimensions:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 160mm (6.30 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 21mm (0.83 inches)\u003c\/li\u003e\n\u003cli\u003eHeight: 30mm (1.18 inches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cspan style=\"text-decoration: underline;\"\u003eWeight:\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003ePDMT-A (w\/o batteries): 40.0 grams (1.41 oz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398694666574,"sku":"Presidium PDMT-A","price":146.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1747725617-74133900.png?v=1775931093"},{"product_id":"presidium-adamas-diamond-tester","title":"Presidium Adamas Diamond Tester","description":"\u003cp\u003e\u003cstrong\u003ePresidium Adamas Diamond Tester\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe epitome of style and cutting-edge technology, Adamas diamond and moissanite tester comes with a changeable magnetic probe tip and allows you to replace any worn or damaged probe tip yourself, eradicating and reducing any equipment downtime. It can also be used with a special micro magnetic probe tip, available separately, which is able to authenticate colorless diamond melees as small as 0.01 carats.\u003c\/p\u003e\n\u003cp\u003eA hallmark of design featuring a dynamic LED display and a sleek ergonomic grip, the premium choice Adamas tester is precise, reliable and made of excellent quality.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eFeatures:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasy-to-use interchangeable magnetic probe tip\u003c\/li\u003e\n\u003cli\u003eIndustry’s thinnest probe tip for testing colorless diamonds\u003c\/li\u003e\n\u003cli\u003eWorld’s only magnetic micro probe tip\u003c\/li\u003e\n\u003cli\u003eDynamic display with super bright micro LED for clear and distinct results\u003c\/li\u003e\n\u003cli\u003eSleek chrome-brushed ergonomic grip\u003c\/li\u003e\n\u003cli\u003eUSB port for alternative power source and connectivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"text-decoration: underline;\"\u003eBenefits:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eDetects colorless diamonds, moissanites, simulants instantly with metal alert\u003c\/li\u003e\n\u003cli\u003eAccurate testing on colorless diamonds as small as 0.02 carats and diamond melees as small as 0.01 carats (with micro probe tip)\u003c\/li\u003e\n\u003cli\u003eRetractable thermoelectric probe tip that ensures constant pressure between probe and gemstone, for enhanced accuracy\u003c\/li\u003e\n\u003cli\u003eLight and portable for convenience\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003ePower \u0026amp; Battery:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e3 x AAA alkaline batteries (approximately 12 hours of continuous use)\u003c\/li\u003e\n\u003cli\u003eUSB port to be used with USB cable and appropriate Presidium Universal USB Power Adaptor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eRecommended Operating Conditions:\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eOptimal Operating Temperature: 18°C – 27°C (65°F – 80°F)\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: 14°C – 51°C (57°F – 124°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eDimensions:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 189mm (7.44 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 36mm (1.42 inches)\u003c\/li\u003e\n\u003cli\u003eHeight:28mm (1.10 inches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eWeight:\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eWeight (without batteries): 85.0 grams (2.99 oz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398695027022,"sku":"Presidium Adamas","price":400.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1747725828-20430400.png?v=1775931097"},{"product_id":"presidium-synthetic-diamond-screener-2-sds-ii","title":"Presidium Synthetic Diamond Screener 2 SDS II","description":"\u003cp\u003e\u003cstrong\u003ePresidium Synthetic Diamond Screener 2 SDS II\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEnhanced with additional features, the Synthetic Diamond Screener II now tests for diamond melees as small as 0.02 carats with instantaneous results, through the measurement of UV absorption.\u003c\/p\u003e\n\u003cp\u003eThe Synthetic Diamond Screener II is developed as a portable PRESIDIUM DIAMOND VERIFICATION INSTRUMENT® to help screen out Type IIa colorless diamond, which is likely to be laboratory-grown and created through chemical vapor deposition (CVD) or high pressure high temperature (HPHT) syntheses, from the natural Type Ia colorless diamond.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhen subjected to this deep UV irradiation, Type Ia and Type IIa diamonds each absorb different amount of UV light. Type IIa diamonds allow deeper UV light to pass through and thus its UV light absorption ability is low. This difference in the light absorption is significant enough to aid in differentiating between colorless Type Ia and Type IIa diamonds.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eFeatures:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdvanced technology that measures a diamond’s UV light transmittance ability\u003c\/li\u003e\n\u003cli\u003e2 colour coded (blue\/red) indicator light bars to give a low or high reading of UV light absorption with blue light indicating Natural Diamond and red light indicating Type IIa Diamond\u003c\/li\u003e\n\u003cli\u003eInstantaneous clear results within 2 seconds\u003c\/li\u003e\n\u003cli\u003eBlue light to illuminate the testing pad\u003c\/li\u003e\n\u003cli\u003eA 5mm metal bar to conveniently raise the test probe for successive testing on loose stones\u003c\/li\u003e\n\u003cli\u003eTest button will blink in red to alert if the device is unable to detect any stones on the photo-detector\u003c\/li\u003e\n\u003cli\u003eAuto shutdown of interior LED light source for safe testing when lid of device is open or when Start Test button is not activated\u003c\/li\u003e\n\u003cli\u003eUSB port for alternative power source and connectivity\u003c\/li\u003e\n\u003cli\u003eExterior base foam padding to ensure non-slip sturdiness and prevent scratches to surfaces\u003c\/li\u003e\n\u003cli\u003eLow battery indicator\u003c\/li\u003e\n\u003cli\u003eEnergy-saving auto power-off of device after 10 minutes without operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"text-decoration: underline;\"\u003eBenefits:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eHelp to screen out Type IIa diamonds likely to be laboratory-grown diamonds\u003c\/li\u003e\n\u003cli\u003eTests on diamonds within a range in dimension from 1.5 mm in width and up to 5 mm in height (approx. 0.02 to 10 carat size)\u003c\/li\u003e\n\u003cli\u003eTests on polished diamonds of popular cuts such as brilliant round cut, emerald cut, baguette cut, etc\u003c\/li\u003e\n\u003cli\u003eCan be used on both loose and mounted diamonds (on jewelry with open-back setting)\u003c\/li\u003e\n\u003cli\u003eFor use on colorless diamonds from D Color down to J Color\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"text-decoration: underline;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003ePower \u0026amp; Battery:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e4 x AAA alkaline batteries\u003c\/li\u003e\n\u003cli\u003eUSB port to be used with USB cable and appropriate Presidium Universal USB Power Adaptor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eRecommended Operating Conditions:\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eOnly for Colorless Diamonds of:\u003c\/li\u003e\n\u003cli\u003eColor Grade: D Color to J Color\u003c\/li\u003e\n\u003cli\u003eCarat Size: 0.02 carat to \u0026gt;10 carats\u003c\/li\u003e\n\u003cli\u003eCut: For all cuts as long as gemstone has a flat surface\u003c\/li\u003e\n\u003cli\u003eMounted Jewelry: For jewelry with “open-back” setting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eDimensions:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003eLength: 130mm (5.12 inches)\u003c\/li\u003e\n\u003cli\u003eWidth: 100mm (3.94 inches)\u003c\/li\u003e\n\u003cli\u003eHeight: 65mm (2.56 inches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eWeight:\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eWeight (without batteries): 210grams (7.40 oz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Presidium","offers":[{"title":"Default Title","offer_id":59398695059790,"sku":"Presidium SDS II","price":650.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/files\/1747726004-73086100.png?v=1775931098"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/2940\/1166\/collections\/1718966153-26066100.jpg?v=1776066756","url":"https:\/\/maddisonsofdurham.co.uk\/collections\/jewellers-tools-gem-metal-testers.oembed","provider":"Maddisons of Durham","version":"1.0","type":"link"}