18 Karat gold, coral, emerald and enamel butterfly brooch, Cartier, Paris, circa 1945. Photo Sotheby's

The fanciful insect decorated with 3 segments of carved coral, the gold wings and head applied with black enamel, further decorated with 3 cabochon emeralds and 2 small round diamonds, signed Cartier, numbered 644506A, maker's mark and French assay mark. With signed box. Estimate 5,000 — 7,000. Lot Sold: 16,250 USD

Sotheby's. Magnificent Jewels. New York | 17 Apr 2008 www.sothebys.com