Operation of this unit is simple. Turn unit on, wait five to seven seconds for the “READY” light, select large or small stone, and touch probe tip to the stone. A light will turn on along with an audio indication if the stone is a diamond. No external power cords or clips necessary, this diamond tester uses a 9V battery. As always some stones require further testing to determine what they are. In the case of some Moissanite stones testing as Diamond you need to do further testing such as checking for Double Refraction also shining UV light (similar to the ones used to detect counterfeit currency) on the stone while testing would help to distinguish Moissanite from Diamond. Full two year warranty included.
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