Cartier antique diamond bow brooch. Set to centre with a cushion shape old mine diamond in an open back millegrain setting with a weight of 0.15 carats, further adorned by eighty six cushion shape rose cut diamonds in open back millegrain settings with a combined weight of 0.75 carats. The total approximate diamond weight is 0.90 carats, to an elegant bow design with symmetrical floral motif to the centre flanked by openwork foliate ornamentation, placed upon a black ribbon background framed by tapering borders, decorated throughout with fine millegrain edging and supported by a finely pierced linear gallery, fitted to reverse with a secure hinged pin and C-clasp with safety mechanism. Tested platinum, numbered 'HSA 1945', circa 1910, accompanied by Cartier receipt and fitted case.
