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The A Source Diamond Tester is the accurate solution to identify diamonds and is your insurance against fakes.The ideal recommended operating conditions for our range of this diamond testers is 18ºC – 27ºC (65ºF – 80ºF)
Other Presidium products include Gem test series. Our products include Gem Microscopes, Gem Refractometers, Table Spectroscopes, Handheld Spectroscopes (Grating Spectroscopes and Prism Spectroscopes), Calcite Dichroscopes, Table Polariscopes, Portable Polariscopes, LW/SW Ultraviolet Lamps, Optic Fiber Illumination, Diamond Proportion Testers, Hardness Pencils, Gem Labs and Gem Boxes. We are marketing Jewelry equipment. Presidium is of Excellent Quality and Reasonably Priced. We are confident that Presidium is the best choice for price/quality. Presidium offers an excellent back up and warranty service.