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Portable thermal and electrical conductivity unit in black housing, able to simultaneously differentiate between natural diamond and all common simulants as well as Moissanite. Operates on three AAA cadmium rechargeable batters, or on wall adapter. Made in USA.

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This instrument does both tests - thermal conductivity for diamond (a conventional diamond tester) and electrical conductivity for moissanite. Operates with one 9V alkaline battery (included). Pocket portable.Test mounted or unmounted stones. Gray shock resistant housing with easy to read features.