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Art Decocushion shape old minediamond ring. Set to centre with a cushion shape old mine diamond, J colour, VVS2 clarity, with a weight of 3.24 carats in an open backrubover setting, flanked by eight cushion shape French cut diamonds in open back rubover settings with a combined weight of 0.24 carats, further adorned by forty two round eight cut diamonds in open back grain settings with a combined weight of 0.42 carats. The total approximate diamond weight is 3.90 carats, to a bombé design featuring millegrain edging and fancy geometric backholing, the tri-split shoulders flowing to a solid D-shapeshank. Markedplatinum and iridium, signed 'Erwin Reu Co', American, circa 1930, accompanied by Gemmological Institute of America report #2165184947.