Diamond ruby and sapphire ring. Set with to top with a line of five square baguette natural unenhanced rubies in open back channel settings with a combined approximate weight of 0.75 carats, set to bottom with five square baguette natural unenhanced sapphires in open back channel settings with a combined approximate weight of 0.75 carats, further set to centre with five round French cut diamonds in open back grain settings with a combined approximate weight of 0.50 carats, to a three line cocktail ring design with polished borders and intricately shaped backholing, the broad trumpeting shoulders smoothly taper to a solid shank. Marked yellow gold with platinum settings, maker's mark 'M.B', French, circa 1950.
