Carved ruby and diamond ring, Cartier, Paris, circa 1930

The foliate motif set with a carved ruby leaf, further enhanced with old-mine and single-cut diamonds and with 4 round cabochon rubies, mounted in platinum, size 7½, signed Cartier, made in France, numbered 6539, one cabochon ruby missing. Estimate: 6,000—8,000 USD

Sotheby's New York. Important Jewels. 25 Sep 08, 10:00 AM. www.sothebys.com