A 9ct gold boulder opal single-stone ring. The free-from boulder opal, within a collet setting, to the plain band. Hallmarks for Birmingham, Ring size M. Weight 5gms. Overall condition fair. Surface scratches/ wear, discolouration and dents in keeping with general age and wear. Boulder opal dimensions 10.9 by 1.2mms wide. Opal has visible matrix patches visible. Large areas of cream, blue body colour. Some patches of play-of-colour visible displaying, blue and green.Please see the Important Notices for Purchasers for coloured gemstones.Condition reports are offered as a guide only and we highly recommend inspecting any lot to satisfy yourself as to its condition.