Some of our jewellery is made with 18k gold plated stainless steel, or 925 silver plated stainless steel. This means they are waterproof and won't tarnish when exposed to water. With this in mind, it's still important to avoid any harsh chemicals to prevent any discolouration. In the case that they do get wet, please make sure you dry them off properly.For pieces that aren't stainless steel based or labelled as waterproof please remove items before exercising, swimming and showering. Please be sure to avoid contact with any harsh chemicals such as perfumes, makeup or hair products, as these may damage the layer of metal plating and will cause tarnishing or discolouration. Please store your items in the Biella Vintage jewellery boxes provided.