A DIAMOND CLIP BROOCH, BY MARC Designed as a series of pavé-set and baguette-cut diamond ribbons gathered by a circular-cut diamond cluster, circa 1955, with French assay marks Signed Marc, Paris, no. 299
A DIAMOND BROOCH, BY CARTIER Designed as a circular-cut diamond plaque with baguette-cut diamond detail, extending a circular and baguette-cut diamond spray, mounted in platinum, with French assay marks Signed Cartier, no. 21316
An art deco diamond, sapphire and platinum brooch, circa 1915 the ribbon brooch set throughout with single and old European-cut diamonds and accented with calibré-cut sapphires; estimated total diamond weight: 2.25 carats; length: 3¾in.
A DIAMOND, EMERALD AND SAPPHIRE FLOWER BROOCH, BY CARTIER Designed as a flower blossom, with a square-cut emerald pistil, enhanced by baguette-cut diamonds and calibré-cut sapphires, to the openwork circular-cut diamond petals and articulated circular-cut diamond stem, mounted in platinum and 18k gold, with French assay marks and maker's mark