Gold Test Needles-Set Of Five-8K-10K-12K-14K & 18K ImpGen a 3 mm setting burr

a 3 mm setting burr to cut the seat

a 3-stage filtration system

The stone measures approximately 6" x 2" x 1/2" and is conveniently mounted in a wood box for easy bench use and storage

219 60 Coarse Notes

Gold Test Needles-Set Of Five-8K-10K-12K-14K & 18K ImpGen a 3 mm setting burrGold 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