Belle Époque diamond ring. Centrally set with a round old cut diamond in an open back rubover setting with a weight of 0.60 carats, further set with eighteen round old cut diamonds in open back grain settings with a combined weight of 0.50 carats, flanked by two round rose cut diamonds in open back grain settings with a combined weight of 0.01 carats. The total approximate diamond weight is 1.11 carats, to an elegant openwork cluster design featuring millegrain edging and open backholing, the tri-split shoulders with ridged detail flowing to a solid shank. Marked platinum, French, circa 1910.
