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How To Test Diamond Turn on the switch. Make sure only 1 light is lighting up on the scale. Wait few seconds for the probe to heat up until Lamp on ready OK.

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【Professional Product 】: Designed for quick, precise, and safe diamond testing. Portable electronic device for distinguishing real diamonds from other

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Size of Diamond Stone Testers: The gemstone tester pen diamond gold tester has size about 6.6 inches length and width about 1.6 inches with thickness

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