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INTUITIVE DESIGN: Jewelry Diamond Testers, Diamonds Selector is a portable electronic device used to distinguish real diamonds from other simulated

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How Does a Diamond Tester Work?

■【Intuitive Design】Hqdz-td Diamond Tester Pen comes with LED lights and audio indication. During a test, if the stone tested is a diamond, the LED

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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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