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Jeweler diamond selector-- volume diamond selector is adjustable by the volume pully. Diamonds-- jewelry tester operated 9v battery ( not included ).

Testers for Diamonds, Gold & Moissanite Wholesale Jeweler Supplies — M&M Merchandisers

The reading is quite easy to read with the scale. Volume is adjustable the volume pully. It emits different sounds to easily distinguish the readings.

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Gold Silver Test Kit

This EASY to use genuine GTE Diamond Analyzer will test the purity of Diamonds, Rubies, Stones, Moissanites, CZ (Cubic Zirconia), Sapphire,

GTE Gold Silver Diamond Tester Selector Gemstone Jewelers Testing Kit Digital Electronic Tool

Gold Silver Diamond Tester Selector Gemstone Testing Kit Digital Electronic Tool

Accuracy Diamond Tester Portable Gemstone Tool Kit Illuminated Jewelry Dector, Features: , This is Electronic Diamond Tester a portable electronic

Gold Silver Diamond Tester Selector Gemstone Testing Kit Digital Electronic Tool