Grobet DIAMOND TESTER-GEM TESTER COLOR STONE

The design of this Gem tester is based upon the use of heat conductivity to distinguish diamond stimulants from diamonds. It incorporates a sophisticated thermoelectric probe and a thermometer which ensures reliable readings. This unit can be used on mounted or unmounted stones, which can be as small as 0.02 carat. Includes an ac adapter, a soft vinyl pouch and a hard plastic case. One-year factory warranty.