All BABYBEI jewelry is crafted from Sterling Silver. Fine Silver is generally too soft for producing luxury jewelry and so it is alloyed with other metals to ensure all of our pieces are both long lasting and just as beautiful. Silver is a very stable element, however the metals it is alloyed with can react to their surroundings creating a tarnish. This occurs particularly when the piece is exposed to water, chemicals, high temperatures or humidity. To keep your jewelry looking its best please follow our care instructions. If your jewelry does become tarnished you can return your piece to us and we will repair this FOR FREE under our 1-Year Warranty. If you are outside of the warranty we are still able to offer you our Lifetime Repair Service for your jewelry, for a fee.