What does 418 mean stamped on gold?

Answer 1

The number 418 stamped on gold typically refers to the gold's purity level, specifically indicating that the gold is 41.8% pure, which corresponds to 10 karats. In the context of jewelry, this stamp signifies that the piece is made from an alloy that contains 10 parts gold and 14 parts other metals, making it less expensive than higher-karat gold items. It’s important to verify such markings, as they can vary by country and manufacturer.