Boucheron Pearl and diamond brooch. Set with one central button shaped natural saltwater pearl, approximately 8.3 x 7.1mm, further set with thirty eight cushion shape old cut diamonds in open back grain settings with a combined approximate weight of 5.50 carats, further adorned with four rectangular baguette cut diamonds in open back rubover settings with a combined weight of 0.80 carats, further decorated with sixteen round eight cut diamonds in open back grain settings with a combined weight of 0.24 carats and further set with four round rose cut diamonds in open back grain settings with a combined weight of 0.04 carats. The total approximate diamond weight is 6.58 carats, to a symmetrical geometric openwork body, featuring a linear pierced gallery and fancy shape open backholing, the reverse mounted with a secure hinged pin and tubular safety clasp, measures approximately 4.6cm by 3.4cm. Marked platinum, signed ‘Boucheron Paris’, French, circa 1920, accompanied by GPL report #04074 and fitted case.
