Colorstone Reference Meter The thermal conductivity of a gemstone is one of the most useful information to a gemologist. It is also easily obtai...
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Gemlogis VISTA is designed to screen both loose and mounted diamonds. It can detect stones set on both OPEN and CLOSED BACK mounting and is one of ...
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LAPIS is a quality house-hold diamond tester designed to provide quick results between diamond, moissanite and simulant. It is especially light and...
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