Lot 28 – An art deco emerald and diamond brooch, by Lacloche Frères, circa 1925. Photo Bonhams

Designed as an openwork buckle composed of three old brilliant and single-cut diamond annular motifs, each millegrain-set with calibré-cut emerald and similarly cut diamond decoration, diamonds approximately 7.25 carats total, signed Lacloche Frères Paris, numbered, French assay marks, length 8.0cm. Estimate:  $12,000 – $16,000

Bonhams. Fine Jewellery. London, New Bond Street. 18 Sep 2013 - www.bonhams.com