Sterling Silver 2-Piece Cubic Zirconia Wedding Set Ring - in Sterling Silver - Product Attributes: - Cubic Zirconia - Polished - FREE gift-ready jewelry box - Ring Size Options: 6 7 8 ::: [ Potential Enhancement Methods: cubic zirconia ] - Synthetic. Some are covered with a product that makes the stone more durable. ::: [ Care and Handling: cubic zirconia ] - Clean with warm soapy water and a soft cloth. :::