One step dual tester. This revolutionary design is unmatched in performance and ease of use. The entire test takes only about one second and then you know if it's moissanite, other artificial diamond, or a genuine diamond. This device is accurate and patent pending. 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.

* weight under 1Lb