seriousdetecting.comAnswer
Feb 11, 2026 - 12:09 PM
Gold test needles are precision testing tools made from known karat gold alloys (8K, 10K, 12K, 14K, and 18K) used to determine the purity of gold samples found during prospecting. They work by creating scratch marks on a testing stone alongside your unknown gold sample - when acid is applied, the reactions are compared to determine which karat rating your gold matches. This 5-prong set gives you the complete range needed for accurate field testing of most gold finds.
