This is an authentic TIFFANY Platinum Diamond .40ct Solitaire Engagement Ring size 52 or 6. The ring is crafted of polished platinum and features a knife edge band with a classic six prong platinum setting holding a single round brilliant cut diamond, approximately .40 total carat weight with G color and VS1 clarity. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.