LOT 59 - A diamond, amethyst and pink tourmaline butterfly brooch by Jean Schlumberger, Tiffany & Co. Designed as a circular-cut diamond and sculpted 18ct gold butterfly, with pear-shaped amethyst and oval-cut pink tourmaline wings, mounted in 18ct gold and platinum, with French assay marks and maker's mark. Sold for US$18,750 (estimate: US$8,000-$12,000).