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Portable Electronic Diamond Tester Pen For Sapphire, Ruby, Crystal, Agate, Jade, Hardness Test Tool, Diamond Selector II V2
This diamond tester is specially designed for true and false gemstone testing, not only fast and accurate, but also safe, used to distinguish real
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High Accuracy Professional Jeweler Diamond Tester Selector For Novice and Expert
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Presidium Instruments Gem Tester II (PGT II) with Assisted Thermal Calibration (ATC) for Identifying Diamonds/Moissanites and Common Colored Gemstones : Presidium: Arts, Crafts & Sewing