Boucheron two stone diamond crossover ring. Set with a square step cut diamond in an open back rubover setting with an approximate weight of 0.40 carats, additionally set with a square step cut cognac diamond in an open back rubover setting with a weight of 0.40 carats, further adorned by sixty eight round brilliant cut diamonds in open back grain settings with a combined weight of 1.40 carats. The total approximate diamond weight is 2.20 carats, to a stylised curving crossover design with polished borders, pierced undulating gallery and open fancy backholing, the ridged shoulders flowing to a solid undulating shank. Marked 18 carat yellow gold, signed 'BOUCHERON PARIS', numbered 'P48508', French, circa 1980.
