This is an authentic TIFFANY 18K Yellow Gold Yellow Diamond .20ct Solitaire Cushion Engagement Ring size 45 or 3.25. The ring is crafted of 18 karat yellow gold and features a fancy light yellow cushion cut diamond weighing approximately .20 carats with SI2 clarity. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.