Gem-set and diamond brooch

Designed as a stylised flower with carved amethyst petals, the pistils set with marquise-shaped tourmalines and brilliant-cut diamonds, to the yellow gold thread fringes, the stem accented with brilliant- and single-cut diamonds and tourmaline leaves. Estimate 25,000—35,000 CHF

Sotheby's. Magnificent Jewels. 19 Nov 08. Geneva. Photo Courtesy Sotheby's. www.sothebys.com