Item #: 225700 This is an authentic TIFFANY & CO Platinum Diamond Letters C Pendant Necklace. This beautiful jewelry piece is made of platinum and features a letter C encrusted with diamonds. This is a simple yet stunning necklace with a one of a kind look only from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.