The ultimate Sherlock Holmes Detector is designed to separate all sizes of loose and mounted natural diamonds from synthetic diamonds in the D-K color range, while also separating loose CZ, Moissanite, synthetic diamond coated CZ and Moissanite and you can test in Bulk up to 200 carat in plastic back. The Sherlock Holmes 2.0 was independently tested in the ASSURE TEST, in accordance with the Diamond Verification Standard in Underwriters Laboratories (UL), with the test protocols for instruments that separate diamonds from synthetic diamonds. ASSURE ID: 5169974.