Yttrium aluminium garnet Y₃Al₅O₁₂:Ce (YAG:Ce) and Lutetium Aluminum Garnet activated by cerium (Lu₃Al₅O₁₂:Ce, LuAG:Ce) are fast and bright scintillation materials. The decay time is 70-100 ns. This is of advantage in time dependent and coincidence measurements. The wavelength of scintillation emission is about 530-550  nm, which is ideal for photodiode and avalanche diode readout.
LuAG is a good alternative to dense and fast rare-earth orthosilicate scintillators (LSO:Ce, GSO:Ce, LYSO:Ce). The material is mechanically and chemically stable with no cleavage and hygroscopicity. The material can be machined into a variety of shapes and sizes including prisms, spheres and thin plates. Recently developed Gd₃Al_5-xGa_xO₁₂:Ce (GAGG:Ce) with the light yield up to 50000 phot/MeV are the brightest known oxide scintillators.