A vintage platinum sapphire and diamond cluster bow brooch C1940 the centre semi-modern cut diamond weighing 70pts, estimated F colour, VS1 clarity, is mill grain set between 4 sapphire and diamond cluster ribbons, the 64 sapphires, channel set down the centre of each ribbon, weigh 1ct in total, the 70 old cut diamonds weigh 2.10cts in total 9.5gms