A series of LAGBPr phosphors of composition Li 6 AlGd (1– x ) (BO 3 ) 4 : x Pr 3+ (0 ≤  x  ≤ 2.0 mol%) were prepared by solid-state reaction method and characterized through thermal, structural, morphological and photoluminescence studies. Thermal investigation shows that the LAGBPr phosphors crystallize at 640 °C. The powder X-ray diffraction studies show that the size of crystallites is of the order of 77 nm. The excitation spectra reveal a charge transfer band due to O 2–  → Pr 3+ (230–250 nm), host-related (Gd 3+ ) bands from 205 to 315 nm and some f-f transitions of Pr 3+ ions from 420 to 500 nm. The fluorescence properties were investigated by exciting within the host and within dopant (Pr 3+ ) ions. A tunable fluorescence from orange-red to white to bluish-white was observed when excited at 274 nm and a bluish-white fluorescence at 449 nm excitation. Upon 449 nm excitation, a blue-shift is observed with increase of concentration of Pr 3+ ions. The optimal concentration of Pr 3+ ions for efficient fluorescence is confirmed to be 1.0 mol%, and a quenching in fluorescence was noticed and it was ascribed to the non-radiative transfer of energy through 3 P 0 , 3 H 4  →  1 D 2 , 3 H 6 , 3 P 0 , 3 H 4  →  3 H 6 , 1 D 2 and 1 D 2 , 3 H 4  →  3 H 4 , 1 D 2 channels. The LAGBPr1.0 phosphor has more proficiency to be used in LED applications.