Abstract: An artifact with anti-iridescent transparent and protective surface layer and related finishing method comprising: (a) readying an artifact that may be plastic, metallic, or plastic with metallic coating, obtained by vacuum deposition or galvanic technique; (b) executing, in correspondence with at least a superficial portion of the plastic, metallic, or plastic with metallic coating artifact, by means of vacuum deposition technique, of a superficial coating with a transparent film; and (c) the execution, in correspondence with the micro-morphology of the transparent coating—air interface, of a modification of the surface, so that it is not consistent with the micro-morphology of the substrate-coating interface.