of geometric design formed of two key style inward scrolling lines either side of a central bar, below a fan of marquise and fancy arrowhead cuts with cluster of old brilliants, further set with old mine, old European, single and baguette diamonds, signed 'Cartier London', approximately 27.50cts in allLength each 3.5cm / 2 5/16''
Width 3.7cm / 1½''Weight: 44.5g
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