Art Deco diamond brooch. Set to centre with one round old cut diamond in an open back rubover setting with an approximate weight of 0.85 carats, adorned by 100 round mixed old cut diamonds in open back grain settings with an approximate weight of 8.30 carats. The total approximate diamond weight is 9.15 carats, to an impressive design featuring intricate openwork with millegrain edging throughout, an open gallery with chenier detailing and fancy open backholing, fitted to reverse with a secure pin and safety catch, approximately 6cm in length. Marked platinum, fittings tested white gold, circa 1920.
