Abstract: A method for producing a photoluminescent composition and the composition obtained, in particular form granular photoluminescent compounds, chosen in particular, and not exclusively, from the following families, based on an inorganic matrix and a doping ion, the photoluminescent composition being intended to be introduced with at least one filler into a transparent matrix. The method comprises a preparation step of: —choosing a first photoluminescent compound PH1 with a particle size range comprising a peak centered on a value P1 corresponding to a particle diameter D1, —choosing at least one second photoluminescent compound PH2 with a particle size range comprising a peak centered on a value P2 corresponding to a particle diameter D2, —choosing the diameter D2 equal to the maximum measurement M1 of the volumetric space V1 freed by the presence of at least four juxtaposed particles of diameter D1.