This item complements several other items in our line of Jewelry Television® gemstone and jewelry making tools and equipment. Use this durable diamond tester at home, in the office, or on the road. This model is also equipped with an ultraviolet light to test fluorescent reaction of stones. ![]() Can be connected with an A/C adapter for long time indoor use, but NOT INCLUDED. ![]() Easy calibration with the level meter volume to match different size stones and can distinguish stones as small as 0.2ct. The JEM-II is equipped with a metal alert, designed to reduce the possibility of a false positive reading caused by touching the metal holding the stone. This diamond tester WILL NOT identify synthetic Moissanite which has a similar thermal conductivity to a diamond. The JEM-II GemVue™ Diamond Tester accurately measures the thermal conductivity of the gemstone to determine whether it is a diamond or a diamond stimulant. View the stone from several different directions for best results. This diamond tester WILL NOT identify synthetic. Diamonds are indicated by sound and light signal. ![]() Buzzer alerts you when the probe tip touches metal. Distinguishes diamonds from CZ's and simulants. ![]() Culti Diamond Selector II Diamond Tester.
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