This is an authentic TIFFANY 18K Rose Gold Platinum Diamond .21ct Harmony Solitaire Engagement Ring 45 3.5. The ring is crafted of 18 karat rose gold and features a round brilliant cut diamond weighing approximately .21 carat total weight, with G color and VS1 clarity grade set within a platinum setting. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.