What does 925 v mean on a ring?

The marking "925" on a ring indicates that the metal is sterling silver, which is made up of 92.5% silver and 7.5% other metals, usually copper. This standard ensures the quality and durability of the silver, as pure silver is too soft for most jewelry applications. The "v" that sometimes accompanies the "925" marking could refer to a specific brand or manufacturer, but it is not a standard designation.