What does mark 825 mean on a bracelet?

The marking "825" on a bracelet indicates that the piece is made of sterling silver that contains 82.5% pure silver, with the remaining 17.5% typically being other metals, such as copper. This is slightly lower in silver content than the standard sterling silver mark of "925," which denotes 92.5% silver. The "825" marking is less common and may suggest a piece that is more durable but has a different quality or price point compared to higher purity silver.