This is an authentic TIFFANY & CO Platinum Rock Crystal Elsa Peretti Disc Pendant Necklace. This stunning necklace is a collar length platinum chain and features a lovely crystal rock disc by artist Elsa Peretti. This is a beautiful limited edition necklace, with 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.