What does B 25 mean on silver ring?

The marking "B 25" on a silver ring typically indicates the purity or alloy composition of the silver. The "B" may refer to the manufacturer or a specific design code, while "25" usually signifies the percentage of silver content, often meaning the ring contains 25% of silver and 75% of other metals. However, it’s important to verify with a jeweler, as markings can vary by region and manufacturer. Always check for additional markings to confirm authenticity and quality.