Item #: 1344797 This is an authentic TIFFANY 18K White Gold Blue Sapphire Stacking Ring size 51 or 5.75. The ring is crafted of 18 karat white gold and features two baguette cut blue sapphires in the center of a concave band. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.