Item #: 753516 This is an authentic TIFFANY 18K Rose Gold Diamond Wide Atlas Open Ring 49 5. The ring is crafted of 18 karat rose gold into a laser cut open Roman numeral band with diamond details along the edges of half the band weighing approximately 0.50 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.