as a back-to-back double cartouche, the openwork C scrolls with pave set curves and foliate fringed edges, a point motif to either side, from pierced line arch scrolls meeting at the middle, set with old brilliant and single cuts, square and baguette diamonds, signed 'Cartier' and 'London'Length 5.3cm / 2 1/8''
Width 3.5cm / 1 3/8''Weight: 28g
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