An Art Deco emerald and diamond plaque ring, a scalloped ring head centred with a rectangular cut emerald of vivid green colour, approximately 5.8 x 3.5 x 2.5mm, surrounded by eight old European cut diamonds, estimated total diamond carat weight 0.87ct, flanked by eight calibre cut emeralds, the plaque setting with milgrain detail affixed to a white metal shank testing as 18ct and platinum, ring head approximately 13.5 x 12.2mm, size N; Total weight 2.4g.