1876 sapphire and diamond three stone ring in 18kt yellow gold

1876 sapphire and diamond three stone ring in 18kt yellow gold. Centred with a cushion shape mixed cut sapphire in a claw setting, flanked by four vertically set cushion shape Old Mine cut diamonds in grain and claw settings, further highlighted with two cushion shape mixed cut sapphires in claw settings, to a fancy three stone design with curving openwork claws, pierced and ribbed gallery and trumpeting shoulders which smooth to a solid shank. Hallmarked 18kt gold, Birmingham, 1876.