1762602 Necklace (natural coloured pearls, diamonds & gold) by European School; length: 43.2 cm; Private Collection; (add.info.: Comprising four strands of eighty-one, seventy-six, sixty-nine and sixty-three natural gray and brown pearls, measuring approximately 12.65 to 4.90 mm, joined by a clasp, set with cushion-cut diamond, weighing approximately 3.03 carats, within an old European-cut diamond surround, mounted in silver-topped gold, 17 ins.); Photo 穢 Christie\'s Images.