4-Piece Needle Set for Gold and Silver Testing Kit - Acid Test Needles for Precious Metal Purity Verification (Jewelry Making, Pawn Shops & Coin Collecting)

Product Description

4 New Acid Test Needles. This set of needles are used to test 10K, 14K, 18K gold and silver. They are used to determine karat content of gold and silver by compairing them to an item you want to test. The needles and the item to be tested are rubbed on a test stone and treated with acid to determine if they match.