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Turn on our Diamond Tester Pen Detector; place the tip of the diamond tester on the gemstone (gentle. Jewelry Diamond Tester,Professional Diamond

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Turn on our Diamond Tester Pen Detector; place the tip of the diamond tester on the gemstone (gentle. Jewelry Diamond Tester,Professional Diamond

Diamond Tester Pen High Accuracy Jewelry Test Tool Thermal Conductivity Meter US

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Diamond Tester Pen High Accuracy Jewelry Test Tool Thermal Conductivity Meter

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Specification: Diamond Tester Dimensions：6.1 x 1.61 x 0.28 Testing Capability：Gemstones of various sizes(Do Not test any metal) Color: Black Auto

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