HMKIS Diamond Tester, 9V Battery, High Accuracy Jewelry Diamond Tester, Professional Diamond Selector, Thermal Conductivity Meter

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

♦【Intuitive Design】Our diamond tester features an LCD display and LED indicator make it easy to read your precise testing results. ♦【Effortless

High Accuracy Diamond Tester Pen,Professional Jewelry Diamond Tester,Diamond Selector for Novice and Expert, Thermal Conductivity Meter-9V Battery

Hmkis Diamond Tester Pen Review - Is It Worth the Hype?

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