A group of two chalcedony and diamond "Edelweiss" flower brooches, by Suzannne Belperron. Photo Christie's Image Ltd 2013

Comprising two flower brooches, each centering upon a bezel-set old mine-cut diamond cluster, to the sculpted chalcedony petals, mounted in 18k white gold, circa 1950, with French assay mark and maker’s mark. One with maker’s mark of Groené et Darde for Jean Herz – Suzanne Belperron (partially indistinct). Estimate:  $30,000 – $50,000

With certificate of authenticity from Belperron

Christie's. MAGNIFICENT JEWELS. 10 December 2013.New York, Rockefeller Plaza - www.christies.com