Gold, Platinum, 69.94ct Amethyst and Diamond Bird on a Rock Brooch

Of the iconic 'Bird on a Rock' collection, set with a cushion shaped amethyst, round brilliant cut diamonds, and a round cut ruby as an eye.Amethyst weighing approximately 69.94 caratsDiamonds weighing a total of approximately 2.99 caratsSigned Tiffany & Co., Schlumberger Std, with serial numbersStamped 750 and PT950Laser inscribed diamond carat total weight18 karat yellow gold and platinumTotal weight 40.00 gramsLength 2⅜ inches, width 1¾ inchesAccompanied by one Sotheby's box