is the finish on the stock oil or one of those nice polyurethanes? A dab of Tru-oil may work to blend in the blemish. if it is polyurethane and there is a scratch and white marring around it then carefully #0000 steel wool and polish the blemish out and apply the new finish or stock sealer to the area. or send it to someone with the tools, utilities and no how to do it for you?