Abstract: A fluorescent material represented by the following formula (I): M1yM2nOzCx:M3w??(I); wherein M1 is selected from Sc3+, Y3+, La3+, Sm3+, Gd3+, Tb3+, Pm3+, Er3+, Lu3+, and combinations thereof; M2 is selected from Al3+, In3+, Ga3+, and combinations thereof; M3 is selected from Tm3+, Bi3+, Tb+, Ce3+, Eu3+, Mn3+, Er3+, Yb3+, Ho3+, Gd3+, Pr3+, Dy3+, Nd3+, and combinations thereof; and 0.45?x/n?0.75, 0.54?y/n?0.6, 0.002<w/n?0.06, and 0.9?z/n?1.5. An illumination device including a light emitting element and the aforesaid fluorescent material is also disclosed.