Our 18k gold plated stainless steel jewellery is waterproof! The stainless steel base is used for its tarnish resistant characteristics, which means you can get it wet and it won't discolour or tarnish. While pieces used with a stainless steel base are waterproof, we advise to avoid any harsh chemicals. Please make sure it is cleaned and dried properly after getting wet and when storing your jewellery.Please see the individual product listing for the materials used.