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https://www.ebay.com/itm/NEW-Presidium-Duo-Tester-PDT-II-Diamond-Moissanite-Gemstone-Jewelry-Refractive-/352215104059
Sep 10, 2020 · Presidium 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.Brand: Presidium
https://www.amazon.com/PRESIDIUM-Tester-Diamond-MOISSANITE-Jewelry/dp/B08659F32G
The 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.5/5(1)
https://www.amazon.com/Presidium-Gem-Tester-II-PGT/dp/B000TD3G8Q
In 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. It is to be noted that natural and synthetic gemstones have similar physical and optical properties.3.9/5(282)
https://www.amazon.com/Presidium-Gem-Tester-II-PGT/product-reviews/B000TD3G8Q
Find helpful customer reviews and review ratings for Presidium Gem Tester at Amazon.com. Read honest and unbiased product reviews from our users. ... This gem tester works very well! I am a gemstone and jewelry collector so this was a necessity for me. It has helped me identify between different gemstones that may look similar.
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