Antique diamond single stone ring with an old cut diamond

Antique diamond single stone ring with an old cut diamond estimated to weigh approximately 0.80cts, in claw setting on 18ct gold shank, ring size N.Condition Report The diamond is a lively bright old cut stone, the stone is a very clean stone with no obvious inclusions, chips or fissures. The diamond does draw colour/have a warm tint, possibly M/N colour. Claw setting and shank in good condition although there is a small gap at the base of the setting, possibly due to wear from a wedding (please see additional image). Shank not hallmarked but presumed to be 18ct. Weighs approximately 2.89 grams.