Victorian style emerald and diamond coronet cluster ring in 18kt yellow gold

Victorian style emerald and diamond coronet cluster ring in 18kt yellow gold. Centrally set with an oval mixed cut emerald in a slightly raised claw setting, encircled by a row of round old cut diamonds in grain and claw settings, to an oval cluster with curving claws, pierced gallery and tri-split shoulders with an openwork terminal before smoothing to a solid shank. Hallmarked 18kt gold, London.