Pure and Cr 3+ doped nanosized Al 2− x Sc x (WO 4 ) 3 solid solutions were prepared by co-precipitation method as well as Al 2− x Sc x (WO 4 ) 3 single crystals were grown by high-temperature flux method. The obtained samples were characterized by X-ray, Raman, IR, absorption and luminescence methods. Single crystal X-ray diffraction showed that AlSc(WO 4 ) 3 is orthorhombic at room temperature with space group Pnca and trivalent cations are statistically distributed. Raman and IR studies showed that Al 2− x Sc x (WO 4 ) 3 solid solutions show “two mode” behavior. They also showed that vibrational properties of nanosized samples have been weakly modified in comparison with the bulk materials. The luminescence and absorption spectra revealed that chromium ions occupy two sites of weak and strong crystal field strength.