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Extra Set of Motor Brushes
1mm sterling silver curb chain
617 90 Degree 102
Narrow rectangular bezel block (11 holes
Hand polished before plating for a smooth
Gold Test Needles-Set Of Three-10K-14K-18K Prop 65 - DINP Extra Set of Motor BrushesGold test needles are an essential tool for jewelers performing acid based karat testing. This set of three needles covers the most commonly encountered gold karats in jewelry: 10K, 14K, and 18K. Use these needles as reference standards when comparing acid reactions on a test stone to determine the karat of an unknown gold item. To use, select the appropriate karat needle and rub or scratch it against a test stone. Make a second rubbing or scratch
