We believe it’s important to have the best materials such as silver 925 and gold plating without any nickel in them. Each item is manufactured to last over time. To maintain your Holy’s beauty it’s best not to swim with it and not spray perfume over them. To clean them its best to use a soft cloth and warm water. Many cleaning products for jewelry can cause damage or color alteration to your jewelry. Also a higher pH of the skin could darken the jewelry before.