Item #: 1420198 This is an authentic TIFFANY Platinum Diamond .52ct Harmony Engagement Ring 49 5. The ring is crafted of a platinum and features a round brilliant cut diamond, approximately .52 carat, along with additional diamonds along the top half of the band, approximately .25 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.