Rio Grande – Yehuda Sherlock Holmes 4.0

Designed to help jewelers protect against fraud, the Yehuda Sherlock Holmes 4.0 can be used to identify loose and mounted gemstones. This tester recognizes natural and synthetic diamonds in the D to K color range, moissanite, CZ, and CZ coated with synthetic diamond. It can also perform a long UV test to check fluorescence in diamonds. Suitable for use on stones as small as 0.005 carat, the tester can separate CVD and HPHT lab-grown diamonds as well as natural diamonds that have been color enhanced with the HPHT process.