Finally, AxB(2−x−y)CryO3 (A = rare earth and B = Al) perovskite-type compounds produced a variety of shades of red and yellow colour depending on the rare earth, the value of x and y, and the calcination temperature. An intense brownish-red colour was obtained when the rare earth Erbium was used with x = 1, y = 0.06. From the X-ray diffraction trace, Er (Al Cr)O3 was found to be the only phase present. SEM micrographs indicated the presence of agglomerates as well as two different types of crystals in terms of morphology. EDX spectra confirmed that both types of crystals had the same composition. When applied in an unleaded transparent glaze, the brownish-red colour pigment powders turned into very pale yellow in the glaze, again indicating instability of the pigment powder in the commercial transparent glaze.