This is an authentic TIFFANY 18K Rose Gold Platinum Diamond .19ct Harmony Solitaire Engagement Ring 52 6. The ring is crafted of 18 karat rose gold and features a round brilliant cut diamond weighing approximately .19 carat total weight with E color and VS1 clarity in a platinum four prong setting. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.