1903 ruby and diamond three stone ring in 18kt yellow gold

1903 ruby and diamond three stone ring in 18kt yellow gold. Set across the finger with three cushion shape mixed cut rubies in claw settings,  further decorated with four rose cut diamonds in grain settings, to a graduating linear design with fine curving claws, pierced and ribbed gallery and flanked by trumpeting shoulders which smooth to a solid shank. Hallmarked 18kt gold, Chester, 1903.