What does 18 rpg stand for on a gold bangle?

The term "18 RPG" on a gold bangle typically indicates that the bangle is made of 18-karat gold, which means it contains 75% pure gold and 25% other metals. The "RPG" may refer to a specific brand, designer, or hallmark associated with the piece. It's important to verify the context, as different manufacturers may use varying designations. Always check for authenticity and quality when purchasing gold jewelry.