A Diamond and Gold Ostrich Feather Brooch, Van Cleef & Arpels, circa 1970. Photo courtesy of Dupuis

Designed as a stylised ostrich feather, the overlapping plumes decorated with graduated rows of round diamonds altogether weighing approximately 11.45 carats, between textured ribbing, mounted in platinum and 18k gold, signed Van Cleef & Arpels and numbered 18.369, French assay marks. Estimate 7,500–11,250 EUR

Dupuis Fine Jewellery Auctioneers. Jewels Spring Sale. Toronto – june 23rd, 2013