Sterling Silver Rhodium-plated Cubic Zirconia Ring - Size 7 - in Sterling Silver - Thickness: < 1 mm - Band Width: 1.5 mm - Ring Top Length: 17.6 mm - Ring Top Width: 17.8 mm - Finish: Polished - Ring Top Width: 17.8 mm - Ring Top Length: 17.6 mm - Feature: Solid - Feature 2: Open Back - All of our jewelry for women and men are authenticated with a 10K or 14K hallmark and are tested to pass FTC regulations. ::: [ 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. :::