An Art Deco style diamond brooch, designed as a central quatrefoil cluster of old cut diamonds, flanked to each side by two further old cut diamonds, all set to knife edge bar within diamond set oval openwork mount and graduated diamond set geometric surround, 64mm x 30mm, weight approx 16.5g Condition report: Central six diamonds weigh between 0.35-0.40cts each, two further diamonds weigh approx 0.30cts, others graduate from 0.10cts to 0.01cts, clarity range SI2-I2, colour range approx H/I/J, some stones with chips, some discolouration where brooch fitting is attached, general wear, refer to images