An art deco ruby, emerald, enamel and diamond clip brooch. Photo Christie's Image Ltd 2014

The circular bombé panel set with two rows of oval-shaped rubies centering upon square-cut emeralds with green enamel bead center, to the pavé-set diamond scroll top and baguette-cut diamond detail at the bottom, 1930s, 4.6 cm, with French assay marks for platinum and gold. Estimate CHF4,000 – CHF6,000 ($4,590 - $6,884)

FROM THE ESTATE OF BARONESS GUNHILD THYSSEN-BORNEMISZA DE KASZON

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014, Geneva -http://www.christies.com/