1885 Old Mine cut diamond and black enamel gold ring

1885 Old Mine cut diamond and black enamel 18kt yellow gold ring. Set with a 1.00ct cushion shape Old Mine cut diamond, estimated E-F colour, VS clarity in a square collet setting, to a broad tapering band with a polished frame, surrounded by black enamel terminating to carved scrollwork and continuing to a solid shank. Hallmarked 18kt gold, Birmingham, 1885.