Item #: 282388 This is an authentic TIFFANY 18K White Gold Diamond Open Atlas Ring size 51, 5.75. This ring is made of 18K white gold and has 3 round brilliant diamonds, approximately .10 in total carat weight. The ring features cutouts of roman numerals around the band. This is a stylish ring to add to your collection from Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.