10k Two-tone Gold Womens Round Cubic Zirconia Engagement Ring - 2.0 Grams In 10k Yellow Gold - - JewelryWeb Style: SVR464225Y - FREE gift-ready jewelry box [ 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.