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 A suite of diamond, turquoise, lapis lazuli and gold jewelry, by Marianne Ostier. Photo: Christie's Images Ltd 2013

Comprising a necklace, designed as a V-shaped cluster of sculpted gold plaques, set with oval cabochon turquoise and lapis lazuli, interspersed with circular-cut diamonds; a brooch and a pair of ear clips en suite, mounted in gold and platinum, necklace 14¾ ins., brooch with pendant hoop for suspension. Necklace and ear clips with maker’s marks for Marianne Ostier (3). Estimate:  $30,000 – $50,000

Christie's. MAGNIFICENT JEWELS. 15 October 2013. New York, Rockefeller Plaza.