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A rock crystal and diamond ‘Feuillage’ brooch, by Suzannne Belperron. Photo Christie's Image Ltd 2013

Of foliate design, the carved rock crystal leaves enhanced with old-mine cut diamonds, to the old European-cut bezel-set diamond cluster detail, mounted in 18k white gold, with French assay mark and maker’s mark, circa 1950. With maker’s mark of Groené et Darde for Suzanne Belperron. Estimate:  $35,000 – $50,000

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