Sterling Silver Rhodium-plated Cubic Zirconia Birthstone Ring - Size 7 - .04 Carat Equivalent Diamond Weight .33 Carat Equivalent Diamond Weight in Sterling Silver - Band Width: 1.5 to 2.2 mm (tapered) - Width of Item: 1.5 to 2.2 mm (tapered) - Ring Top Length: 5 mm - Ring Top Width: 7.7 mm - Finish: Polished - Ring Top Width: 7.7 mm - Ring Top Length: 5 mm - Feature: Open Back - Feature 2: Semi-Solid - 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. ::: ::: ::: [ Care and Handling: diamond ] - Clean with warm soapy water and a soft brush or cloth. :::