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☢[Easy to Use]: Real Diamond will Emits sounds and lights >=9.It is designed for quick, precise, and safe diamond testing.Emits audible sounds to

Best Sellers Diamond Tester Pen,High Accuracy Jewelry Diamond Tester Tool for Novice and Expert, Thermal Conductivity Meter(Diamond Tester)

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【Initialization】After powering on, turn the wheel to keep 4 green lights on to finish the Initialization. Otherwise you will get inaccurate results.

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Best Sellers Diamond Tester Pen,High Accuracy Jewelry Diamond

Function: The jewelry tester is designed for fast, accurate and safe diamond testing. It is a portable electronic tool used to distinguish real and

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