Item #: 989023 This is an authentic TIFFANY Sterling Silver Diamond Black Spinel 15mm Ziegfeld Ring 47 4. The ring is crafted of sterling silver and features a large black spinel center stone framed by four sparkling bezel set diamonds, approximately .16 total carat weight. Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.