This is an authentic TIFFANY Platinum Diamond .18ct Harmony Solitaire Engagement Ring size 49 or 5. The ring is crafted of platinum and features a round brilliant cut diamond center stone weighing approximately .18 total carat weight, with E color and VVS2 clarity. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.