What does h925 oz mean on a ring?

The marking "h925 oz" on a ring typically indicates that the ring is made of 92.5% pure silver, which is standard for sterling silver, and the "h" may refer to a specific manufacturer or designer. The "oz" could suggest that the item weighs an ounce, although this is less common in jewelry markings. Overall, it signifies the metal's quality and possibly the brand associated with the ring.