An early twentieth century Art Deco platinum, certificated diamond and emerald ring, of bombe form, set to the centre with a circular transitional-cut diamond, estimated weight 1.00ct, to a calibre-cut emerald surround, all with a filigree circular- and baguette-cut diamond bombe, estimated total diamond weight 2.00ct ring size M½, accompanied by a report from Universal Gemological Services, stating the centre diamond to be 1.00ct, D-E colour and VS2 clarity.