Emerald and diamond cocktail ring. Set centrally with a rectangular step cut natural emerald with no colour enhancement in an open back rubover setting with an approximate weight of 1.00 carats, further set with four round old cut diamonds in open back claw settings with a combined approximate weight of 0.40 carats, to a striking cocktail design featuring curving claws, polished edges and fancy shape open backholing, the broad integrated shoulders leading down to a solid tapering flat shank. Marked yellow gold and platinum, French, maker's mark 'M C', circa 1940.
