A coloured diamond and diamond brooch, of abstract design, the circular polished yellow gold panel decorated with an openwork section of white gold wirework detail, mounted with a round brilliant-cut diamond of yellow tint, a marquise-cut and a round brilliant-cut diamond, each weighing approximately 0.75, 0.40 and 0.40 carat, diamond untested for natural colour origin, mounted in 18 carat yellow and white gold, diameter 3.6 cm