Gold Testing Keys - TJ-99804

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These Four Gold Testing Keys Can Help You To Determine Whether Your Gold Is 10k, 14k, Or 18k. The Fourth Key Is Silver. Testing Stone And Acids Are Not Included With This Set Of Ke ys.* These Testing Keys Can Be Used With Standard Scratch Test* Must be used with testing stone, and special acids (not included)* An accurate way to measure precious metal quality* Professional quality Show more