This is a solid sterling silver ring. Sterling silver does not rust but even though our sterling silver items are plated with rhodium they might tarnish over time (depending how the ring is worn and in what environment). If it does you can easily clean it in silver cleaning solution or simply use white vinegar and baking soda. White vinegar and baking soda make a gentle cleaner to remove tarnish. Soak the tarnished piece in a solution of 1/2 cup white vinegar and 2 tbsp. baking soda for two to three hours, then rinse and dry.