Picking the Right Gold Testing Gun for Accurate Results
If you've ever spent time around a pawn shop or a high-end jewelry store, you've probably seen someone point a sleek, handheld device at a ring or a bracelet—that's a gold testing gun. It looks like something out of a sci-fi movie, but it's actually one of the most practical tools in the industry for figuring out exactly what's inside a piece of metal without having to scratch it or dip it in chemicals. ...