1950s sapphire and diamond oval cluster ring in gold

1950s sapphire and diamond oval cluster ring in 18kt yellow gold. Centrally set with an oval mixed cut sapphire in a slightly raised claw setting, encircled by a row of eleven round brilliant cut diamonds in claw and grain settings, to a classic coronet cluster with neat, curving claws and pierced gallery, met to either side with split carved shoulders with decorative scrolling, terminating to a solid shank. Estimated total diamond weight 0.70cts. Marked 18kt gold.