White light emitting diodes directly driven by alternating current (AC-LEDs) become increasingly popular in lighting.However, the harmful flicker occurs because the blue LED chips only work over the threshold voltage. Transparent afterglow phosphor-glass composites are thus proposed as excellent color converters to eliminate the flicker. In this paper,Gd2.94Al2Ga3O12:0.06Ce3+–SiO2 (GdAGG:Ce–SiO2) glass ceramics were prepared via cold isostatic pressing molding and pressureless sintering at a low temperature. The transparency, structures, microscopic morphologies and luminescence properties were investiagted.Besides, the samples were assembled on the commercial blue LED chips or blue laser diodes (LDs) to explore the potential application.