This is an authentic TIFFANY & CO Platinum Diamond Small Open Circle Pendant Necklace. This chic necklace features a circle of beautiful diamonds .47ctw. in a platinum setting. Add sparkle to your wardrobe with this beautiful diamond pendant necklace from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.