https://isit.gold/blog/ Your AI-powered metal expert. Instant jewelry analysis and precious metal identification with accurate worth estimation. en Mon, 10 Aug 2026 09:00:00 GMT https://isit.gold/blog/how-to-read-gold-hallmarks/ https://isit.gold/blog/how-to-read-gold-hallmarks/ Karat marks, fineness numbers, assay offices and the plating codes that look like gold but are not — a field guide to the tiny stamps that decide what a piece is worth. Mon, 10 Aug 2026 09:00:00 GMT Gold Hallmarks Buying Guide