<p>A pigment with a surface region whose smallest dimension is a multiple of the longest wavelength (ca. 400 nm) of UV light has on at least one surface region a definite diffractive structure with a space periodicity of at least a multiple of the longest wavelength (ca. 400 nm) of UV light. An Independent claim is also included for the production of the pigment by (1) coating a film-like carrier having a definite diffraction structure in or on it with a sealing agent; and (2) comminuting the carrier.</p>
