An Edwardian diamond brooch

An Edwardian diamond brooch, the open scroll design with central cushion cut diamond and diamond set scroll and foliate surround, with pendant diamond drop, 6.3 cm long, 4.3 cm wide, yellow and white metal set, with brooch fitting, with fittiings to convert into a larger piece, approx 4 carats total diamond weight, 14.5g all in Two diamonds missing - one to lower trefoil, the other small diamond point to scroll, otherwise good original condition