This is an authentic TIFFANY & CO 18K White Gold Diamond Atlas Ring 4.5. This ring is made of 18 karat white gold and has 3 round brilliant diamonds. This ring is a size 4.5 and measures slightly over 5mm wide. This is a elegant ring only from Tiffany. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.