Colombian emerald and diamond ring. Set to centre with a rectangular emerald-cut natural Colombian emerald with minor clarity enhancement in a closed back claw setting with an weight of 1.98 carats, further set with two rectangular baguette cut diamonds in open back claw settings with an approximate combined weight of 0.60 carats, to an elegant flanked solitaire design featuring curving claws, a gadrooned gallery and closed backholing flanked by inwardly tapering raised shoulders flowing smoothly down to a solid D-shape shank. Tested yellow gold, circa 1940, accompanied by The Gem & Pearl Laboratory report #21327.