White Agate, Gold, Turquoise and Cabochon Sapphire and Ruby Box, Cartier, France. Photo Doyle

The rectangular-shaped agate box, surmounted by two gold hinges and clasp centering 3 Persian turquoises, framed by pear-shaped cabochon sapphires and rubies edged in gold, signed Cartier, no. S 235, with French assay marks. 3 7/8 x 6 3/4 x 1 13/16 inches. Pin on clasp missing. Minor nick on front corner. Estimate $40,000-60,000

Doyle New York. Important Jewelry. Monday, April 15, 2013 at 10am. http://www.doylenewyork.com/