FLUORESCENT MATERIAL

A fluorescent material has a core-shell structure. The core contains a crystal phase of an inorganic compound having Formula: MxMgaAlyOzNw (A); M represents a metal; × satisfies 0.001 ≤ × ≤ 0.3; a satisfies 0 ≤ a ≤ 1.0 - ×; y satisfies 1.2 ≤ y ≤ 11.3; z satisfies 2.8 ≤ z ≤ 18; and w satisfies 0 ≤ w ≤ 1.0. The shell is formed on at least a part of a surface of the core and contains boron and/or silicon. The core has a sodium content of 1700 ppm by mass or less and a specific surface area of 0.01 to 4.30 m2/g. A ratio Y/X of a peak area value Y of boron or silicon to a peak area value X of metal M present in the shell satisfies 0 < Y/X ≤ 0.095 in an EDX measurement of a cross section of the fluorescent material.