Tiffany & Co. diamond and Kashmir sapphire brooch in gold and platinum, designed by Jean Schlumberger and dating back to the 1960s. Part of the late Bunny Mellon's private collection and set with a 17ct sapphire, it sold to an online bidder for $1 million

Tiffany & Co. diamond and Kashmir sapphire brooch in gold and platinum, designed by Jean Schlumberger and dating back to the 1960s. Part of the late Bunny Mellon's private collection and set with a 17ct sapphire, it sold to an online bidder for $1 million.