What does 825 ogc stand for on jewelry?

The engraving "825 OGC" on jewelry indicates that the piece is made of 82.5% silver, which is equivalent to sterling silver, and "OGC" likely represents the manufacturer's mark or a specific design line. The "825" hallmark signifies that the silver content is slightly lower than the standard 925 used for sterling silver, which is 92.5% pure silver. This marking helps identify the quality and authenticity of the metal used in the jewelry.