This is an authentic TIFFANY & CO 18k Yellow Gold Platinum Diamond Atlas Necklace. This magnificent choker necklace features 18K yellow gold links with twenty round brilliant-cut sparkling diamonds totaling 1.05 carats, set in platinum. This is a marvelous necklace with the unforgettable style only from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.