Boucheron Colombian emerald and diamond cluster ring. Set with one central square emerald-cut natural Colombian emerald with no colour enhancement in an open back claw setting with an approximate weight of 2.60 carats, encircled by an undulating single border of twenty eight rectangular baguette cut diamonds in open back claw settings with an approximate total weight of 1.50 carats, to a ballerina cluster, with pierced backholing, flanked by split shoulders on a double chamfered edge shank. Marked 18 carat yellow gold and platinum, signed 'Boucheron', French, circa 1960, accompanied by Gemmological Certification Services report 5774-566.
