A. Silver products have the characteristic of reacting with sulfur in the air, sweat, cosmetics, chemicals, etc. and causing discoloration. You can restore the shine by cleaning with a cloth or cleaner. Avoid wearing it for long periods of time or leaving it in contact with water. After use, we recommend wiping the product with a soft cloth and placing it in a special case to minimize contact with air. We also offer free cleaning at the store. We also sell specialized cleaners, so please feel free to contact your local store for details.