Antique old mine diamond bar brooch. Set to centre with a cushion shape old mine diamond in an open back rubover setting with a weight of 2.05 carats, further adorned with twenty four cushion shape old mine diamonds in open back rubover and grain settings with a combined weight of 7.00 carats. The total approximate diamond weight is 9.05 carats, to an elegant bar brooch featuring polished edges, a linear gallery supported by cheniers and fancy open backholing, fitted to reverse with a secure hinged pin and trombone clasp. Marked platinum and 18 carat yellow gold, French control marks, circa 1910, accompanied by a fitted box with monogram 'G P'.
