This is Electronic Diamond Tester a portable electronic device for distinguishing real diamonds from other simulated stones. 1 x Diamond tester(battery not included). Those already inlay need not put tray hole in, you can use hand to hold it.
Portable High Accuracy Professional Diamond Tester Gemstone
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Purity Testing Kit for Diamonds Gemstones Moissanites Gold Silver
Purity Testing Kit for Diamonds Gemstones Moissanites Gold Silver
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Diamond Tester Pen, High Accuracy Jewelry Diamond Tester+200g/0.01
This is Electronic Diamond Tester a portable electronic device for distinguishing real diamonds from other simulated stones. 1 x Diamond
Diamond Tester Selector Portable Illuminated Jewelry Gemstone Testing Tool Kit