Methods for preparing monodispersed, multilayered silica-Y:Eu-silica core-shell particles and for fabricating their colloidal photonic crystals are proposed. Silica-Y:Eu core-shell particles with a size of 360 not were synthesized with it homogeneous precipitation method at 80 degrees C in a 50/50 (v/v) water/propanol solution at 0.0009 mol/dm(3) Y(NO3)(3) 0.0001 mol/dm(3) Eu(NO3)(3) 0.5 mol/dm(3) urea, 1 g/dm(3) polyvinylpyrrolidone (PVP) and 0.01 vol% suspension of silica particles with in average size or 330 nm. Succeeding silica-coating of the silica-Y:Eu core-shell particles was performed in ethanol at 10 mmol/dm(3) tetraethylorthosilicate, 11 mol/dm(3) H2O, 0.5 mol/dm(3) ammonia, 5 mmol/dm(3) acetic acid, 1 g/dm(3) PVP and 0.001 vol% suspension of silica:Eu core-shell particles. Consequently, multilayered silica-Y:Eu-silica core-shell particles with an average size of 460 nm and a coefficient or variation as low its 3.0% could be obtained. Colloidal crystals composed or these particles exhibited both reflection based on Bragg diffraction and luminescence of Y:Eu.