Tiffany twist knot 1 grain diamond ring K18YG No. 12 Brand: Tiffany Gender: Women Gemstone: Diamond Material: Yellow gold (18K) Ring size (US): 6.5 This item is pre-loved. Before purchasing, please refer to the images for the exact condition of the item. We provide a 100% guarantee that all items in our Closet are authentic. If for any reason you are not satisfied with the authenticity of your purchase, we will provide a full refund. We are open to offers!