An Art Deco emerald and diamond clip brooch, by Cartier. Photo Christie's Image Ltd 2010

Designed as an angular vase composed by a rectangular and marquise-shaped emerald with baguette and rose-cut diamond borders, to the old-cut diamond floral arrangement, circa 1925, 4.0cm long. Signed Cartier London. Estimate $10,000 - $15,000. Price Realized $12,500

Christie's. JEWELS AND WATCHES: THE DUBAI SALE. 28 April 2010. Jumeirah Emirates Towers Hotel. www.christies.com