centred by a principal round brilliant cut white diamonds, in an open frame of calibre cut sapphires with four round cut yellow diamond accent stones, the sapphire circle overlapping outer circles set with calibre cut rubies, emeralds and circular cut yellow diamonds, white diamond crescents in between, the gallery with engraved scroll band, mounted in platinum and goldWidth 3.2cm / 1 5/16''Weight: 15g
Art Deco diamond and rock crystal panel brooch by Boucheron, Paris, of geometric design formed of stepped overlaid polygonal crystal and diamond panels, the larger crystal septagon panel base topped by a pave diamond hexagon and a crystal pentagon, all pierced through and with diamond geometric join pave set with baguette and round brilliant cut diamonds, mounted in platinum and white gold to the hinged clip to back, this signed 'Boucheron Paris', with French assaymarks and indiscernible workshop mark