Item #: 145012 This is an authentic TIFFANY Sterling Silver Black Onyx Bead Toggle Necklace. This beautiful necklace is crafted of 8mm polished black onyx beads with a sterling silver toggle closure. This is an exquisite necklace for a one of a kind look, from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.