Gold Test Needles-Set Of Five-8K-10K-12K-14K & 18K Ring Mountings more precise results

more precise results

5 mm Approximate Stone Weight 3/8 ct (diamond weight) Prong Count 4 Construction Die struck Finish Highly polished Ring Size Range 6–6-1/4 (standard USA) 14K White Gold Alloy Nickel-based

Supports metal workpieces while allowing controlled deformation during shaping

569) Number of Screwdrivers 9 Blade Sizes 0

Gold Test Needles-Set Of Five-8K-10K-12K-14K & 18K Ring Mountings more precise resultsGold test needles are an essential tool for jewelers and precious metal buyers who need to verify the karat purity of gold items using acid testing. This set includes five needles spanning the most commonly encountered gold karats 8K, 10K, 12K, 14K, and 18K giving you a comprehensive reference range for comparative acid testing. To use, select the appropriate karat needle and rub or scratch it against a test stone. Make a second mark on the stone with