Diamond Testers

Presidium Diamond Mate Diamond Tester: The Presidium Diamond Mate Diamond tester instantly identifies your diamond's authenticity by testing their thermal properties. This diamond tester has the industry's thinnest thermoelectric probe (0.6mm) which provides consistent pressure when placed against your stone. Suitable for testing polished and unpolished stones as small as 0.02ct and will instantly return results via the clear LED display, which means there is no waiting time between tests.

Presidium Synthetic Diamond Screener II: The Presidium Synthetic Diamond Screener II is a professional and compact tester for measuring a diamond's UV light transmittance ability, therefore identifying if it is a synthetic or natural stone. Featuring advanced technology, this reliable screener helps identify whether your diamond is Type 2a colourless (synthetic) or Type 1a colourless (natural) through either low or high UV absorption. It has the ability to test on polished diamonds of the most popular cuts; Brilliant, Emerald and Baguette from 1.5mm wide up to 5mm in height (0.02ct - 10ct), D-J colour. 

Presidium Multi Tester III Diamond And Moissanite: The Presidium Multi Tester III is the industries first tester that verifies the authenticity of colourless diamonds, moissanite and other colourless simulants such as; Sapphire, Spinel, Cubic Zirconia and Zircon. This all-in-one instrument provides reliable and accurate results and identifies the colourless stones by measuring their thermal and electrical properties. 

Presidium Duo Tester Pdt: The Presidium Duo Tester PDT is the only Gemmological instrument in the industry that can examine gemstones using both thermal and reflectivity testing. This advanced duo tester instantly differentiates diamonds from other simulants with ease.