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Diamond Parcel Paper Weight and Stone Sorting Paper Holder CZ MASTER SET PRO - 0.50CT 10 STONE SET Medium Slide-Lock Diamond Tweezer MR - Swiss DiamondNite Diamond & Moissanite Tester

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.