Item #: 733931 This is an authentic TIFFANY Platinum Diamond .19ct Harmony Solitaire Engagement Ring 45 3.25. This lovely engagement ring is crafted in platinum and has a round brilliant cut solitaire, approximately .19 total carat weight, beautifully set in four prongs. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.