Art Deco style diamond hexagonal cluster ring in platinum

Art Deco style diamond hexagonal cluster ring in platinum. Centrally set with a 0.30ct round Old cut diamond in a rubover setting, bordered by a hexagonal frame of round eight cut diamonds in grain settings, further embellished by step down chevron motifs to either side set with round eight cut diamonds in grain settings, to an angular cluster design with subtle millegrain borders, open gallery supported by geometric cheniers and flanked to either side with polished shoulders which smooth to a solid shank.