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.
Jeweler diamond tool kit : 0.001g Digital Scale + Tester + Loupe +
Diamond Checker Tool Electronic Kit - Gem Tester Electronic Pole
EveryMarket
【Portable Design】The diamond selector is equipped with a PU bag and a small test platform for holding loose gemstones. Designed for fast, accurate and
zjchao Diamond Tester, LED Audio Diamond Detector Selector Portable Jewelry Gemstone Precision Tool Detective Test Kit for Jewelry Jade Ruby Stone
Jeweler diamond tool kit : Portable Diamond Tester - 60X
EveryMarket
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Công ty In Đồng Gia Phát – Công ty Đồng Gia Phát chuyên in ấn túi
Gemstones Tester Pen Portable Gemstone Selector Tool Led - Temu
Jeweler diamond tool kit : Portable Diamond Tester - 60X