High Accuracy Diamond Tester Selector Gemstone Tool Gems Jewelry Test Tool with LED Indicator, Adult Unisex, Size: 6.6 x 1.6 x 0.8, Black

Features: Easy operation. Accurate and reliable reading. LED light and audio result indication. Simple calibration for stones of various sizes. Detailed user manual is included in the package. Matched with a testing platform for loose stones. Light weight, matched with a convenient carrying case. The red light will be showed and the audio indicator will ring if the stone is real diamond.

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