Gold Test Needles-Set Of Five-10K-14K-18K-22K & .999 Silver Polishing & Finishing this thick touchstone is made

this thick touchstone is made in the USA from natural Arkansas black novaculite — a premium material quarried and cut domestically

360-43 / Foredom #S-93-43

Widely compatible size for many India-made rolling mills

it delivers consistent forming performance and long-term durability for professional jewelers and metalsmiths

Gold Test Needles-Set Of Five-10K-14K-18K-22K & .999 Silver Polishing & Finishing this thick touchstone is madeGold test needles are an essential tool for jewelers and precious metal buyers who need to assess the karat or fineness of gold and silver items using acid testing methods. This set of five needles covers the most commonly encountered gold karats and a fine silver standard, giving you reliable reference marks for side by side acid comparisons. Features Set of five test needles covering four gold karats and one silver fineness Includes 10K, 14K, 18K,