2 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. Low battery indicator.
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AN INDUSTRY LEADERThe Presidium Gem Tester II is based on the invention of Professor Julian Goldsmid from the University of New South Wales in Australia. THINNEST RETRACTABLE PROBE TIP I PGT II features the industry’s thinnest retractable probe tip.
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The Presidium Gem Indicator is an enhanced and more convenient handheld version of the revolutionary Presidium Gem Tester/Colored Stone Estimator. It distinguishes between diamonds and other colored gemstones using the principles of thermal conductivity.
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THINNEST RETRACTABLE PROBE TIP I PGT II features the industry’s thinnest retractable probe tip. The Presidium Gem Tester II is based on the invention of Professor Julian Goldsmid from the University of New South Wales in Australia.
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A used presidium gem tester. Reads error message. May need a new tip and to be recalibrated. Battery operated portable. For testing gems and stones colored and diamonds. Comes with the bag. No directions included. Not working. Just reading Error. Sold as is for parts or repair.
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Not only does it have a clear and easy-to-read analog dial, but it can differentiate between 15 types of gemstones. Unit operates with 2 AA batteries or on an AC adapter (included ). PRESIDIUM GEM TESTER II.
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For use with Presidium Gem Tester II (PGT II) and Duo Tester II (PDT II) only.
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Manufacturer: Presidium. Retractable thermoelectric probe tip that ensures constant pressure between probe and gemstone. Style: Compact, Modern. Large easy to read analog dial with 15 colored gemstones.
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