What does 18 Kaplan mean on a ring?

The term "18 Kaplan" on a ring typically refers to the gold content and the manufacturer or designer. "18" indicates that the ring is made of 18-karat gold, which contains 75% pure gold and 25% other metals for durability. "Kaplan" may refer to a specific brand, jeweler, or designer associated with the ring. Together, they signify both the quality of the gold and the identity of the maker.