Art Deco fancy colour diamond brooch. Set to centre with a marquise shape old cut natural brown diamond in an open back rubover setting with an approximate weight of 1.45 carats, flanked by two round old cut natural brown diamonds in open back rubover settings with a combined weight of 3.45 carats, further set with one hundred round old cut diamond in open back grain settings with a combined approximate weight of 3.40 carats. The total approximate diamond weight is 8.30 carats, to an impressive openwork brooch design featuring millegrain borders, a linear pierced gallery and fancy shape open backholing, fitted to reverse with a secure pin and safety catch, approximately 7.5 cm in length. Tested platinum, marked '909', circa 1930.
