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★The kithing diamond Tester Pen is simple to operate to get results. Real Diamond will emit sounds and lights >=9. It is designed for quick, precise,
High Accuracy Diamond Tester Pen Professional Gem Tester for Novice and Expert
Function: The jewelry tester is designed for fast, accurate and safe diamond testing. It is a portable electronic tool used to distinguish real and
Portable Thermal Conductivity Meter Drill Pen High Accuracy Diamond Gem Detector Diamond Tester Professional Jewelry Tester,Detection and
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Portable Electronic Diamond Tester Pen, Used for Diamond, Gem, Crystal, Agate, Jade, Hardness Testing Tool - AliExpress