Item #: 106242 This is an authentic TIFFANY Platinum Pear Shape .65ctw Diamonds By The Yard Necklace.  The platinum chain hangs just beneath the neck with a pear shaped diamond weighing .65 carats. For 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.