1930'S TIERED SIGNET RING WITH DIAMONDS The main plate is set with two brilliant-cut diamonds (old cut) in a seed setting. It is framed by two lines of smaller diamonds. Set in platinum. French work. Hallmark of the Atelier BD deux canards. Gross weight: 7.10 g. Finger size: 48. Weight of the two diamonds: approx. 0.70 carat each. A diamonds and platinum ring, circa 1930. French assay mark. BD Atelier maker's mark. Gross weight : 7,10 gr. Size : 48. Two diamonds' weight : 0,70 carat each approx.