Karat, Purity and Grade Stamps

The unsurpassed clarity of the Makers Mark (straight head stamp) and the Ring Stamp (rounded head stamp) make it ideal for karat values, purity values and grade value. These stamps are excellent for jewelers, craftspeople, and hobbyists who want to put an identifying Karat, Purity, or Grade value on their work. They work great on metals such as brass, bronze, silver, gold, platinum, stainless, aluminum, and most plastics too. Made in the USA, our stamps are clearer, sharper and longer lasting than any other steel stamp on the market!