18 karat gold, citrine, smokey quartz clip-brooch, Herz Belperron, circa 1935;  Photo Sotheby's

Set in the center with a large oval citrine, framed by a tiered block of smokey quartz, maker's mark for Groëné et Darde, French assay marks. With fitted and signed box. Lot 279. Estimation 40,000-60,000 USD

NOTE DE CATALOGUE: 
Illustrated in Suzanne Belperron, by Sylvie Raulet and Olivier Baroin, p. 156; and in Masterpieces of French Jewelry, Fine Arts Museums of San Francisco; and in Art Deco Jewelry, Musée des Arts Decoratifs, p. 74.
Exhibited at the Fine Arts Museums of San Francisco in the 'Masterpieces of French Jewelry' exhibit, February 10, 2007 - June 10, 2007; and at the Musée des Arts Decoratifs in the 'Art Deco Jewelry' exhibit, March 19, 2009 - July 12, 2009.

Sotheby's. Magnificent Jewels. New York | 18 avr. 2012, 10:00 AM www.sothebys.com