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A late art deco sapphire and diamond double clip brooch, Raymond Yard, circa 1935. Photo courtesy Bonhams

Each of openwork geometric design, the transitional-cut diamond shield-shaped plaques decorated with variously-cut sapphires, enhanced by baguette, square and kite-shaped diamonds; signed Yard for Raymond Yard, with signed box; estimated total diamond weight: 6.55 carats; mounted in platinum; length: 2 1/4in. Estimate:  $20,000 – 30,000

Bonhams. 19 Jun 2013. New YorkFine Jewelry