Presidium is a leading brand in gemstone testing and measuring instruments, known for their accuracy and reliability in the jewellery industry. At Maddisons of Durham, we offer a variety of Presidium products, including the Diamond Mate Pocket Tester and the Digital Gem Indicator. These tools are essential for professional jewellers, providing precise testing capabilities for diamonds and coloured gemstones. The Diamond Mate Pocket Tester uses a retractable thermoelectric probe to ensure accurate results, while the Digital Gem Indicator can identify up to 31 different gemstones based on thermal conductivity. These devices are designed for ease of use, with clear digital displays and ergonomic designs, making them indispensable for gemstone verification and appraisal.

Explore our selection of Presidium tools at Maddisons of Durham to enhance your gemstone testing and measuring capabilities. Our inventory includes advanced models like the Duo Tester II, which combines thermal and reflectivity tests to distinguish diamonds from their simulants, and the Digital Electronic Gemstone Gauge, known for its precision in measuring gemstone dimensions and converting them to carat weight. These tools are portable, user-friendly, and come with features such as low battery indicators and USB connectivity. Trust Presidium’s innovative solutions for reliable and efficient gemstone testing, ensuring the authenticity and quality of your jewellery pieces.