Art Deco large diamond, ruby and emerald circular domed cluster ring

Art Deco large diamond, ruby and emerald circular domed cluster ring in platinum and 18kt yellow gold. A round dome cluster set with one hundred and thirty-three round old cut diamonds in platinum grain settings, set with a vertical row of eleven calibre cut rubies in channel settings, accompanied by a parallel row of eleven calibre cut emeralds in channel settings, to an impressive cluster design with smooth polished settings, sturctured gallery with supportive cheniers and square shoulders which smooth to a solid shank. Estimated total diamond weight 2.50cts.