This is an authentic TIFFANY Platinum Diamond .25ct Elsa Peretti Diamonds by the Yard Pendant Necklace. This chic necklace is composed of a collarbone-length platinum chain with an 0.25 carat diamond pendant. This is a perfect necklace for all occasions from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.