This is an authentic TIFFANY Platinum Diamond .23ct Harmony Solitaire Engagement Ring size 48 or 4.5. This lovely engagement ring is crafted of platinum and features a 2mm band that holds a round brilliant cut diamond approximately weighing .23 carats, VVS2 clarity, F color, and crown laser-inscription T&Co.T07020173. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.