Item #: 709172 This is an authentic TIFFANY Platinum Diamond .66ct Solitaire Engagement Ring size 50 or 5.25. This classic platinum band features a round brilliant cut diamond weighing approximately .66 carats, with G color and VS1 clarity. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.