René Boivin old mine diamond three stone ring. Set to centre with a cushion shape old mine diamond in an open back claw setting with an approximate weight of 0.95 carats, flanked by two cushion shaped old mine diamonds in open back claw settings with a approximate combined weight of 1.50 carats. The total approximate diamond weight is 2.45 carats, to an elegant three stone design featuring curving claws, an intricately pierced gallery with scrolling motifs and open backholing, leading to raised shoulders and flowing through to a solid D-shape shank. Marked platinum, makers mark 'RB' for René Boivin, French, circa 1910.
