Product Details Stone Description: 7 * 9mm oval genuine gemstone Stone Setting Material: 4 prong white gold over 925 sterling silver Chain Description: 18" + 2" extension = 20 inches, white gold + sterling silver Perfect chain necklace piece to have in your collection Perfect for gifting, it comes with a jewelry box Money-back guaranteed if it is not what you expect We provide good customer service, please contact us for any questions that you may have Click on the “Uniquelan Jewelry” link on our product title, to visit our storefront, We have all kinds of unique jewelry that you will love.