We prepared chemical compounds whose Ce
3+ ions are replaced with Bi
3+ ions at a certain rate in LiCeMo
2O
8, NaCeMo
2O
8, Ca
0.5CeMo
2O
8, and Sr
0.5CeMo
2O
8 that have the sheelite crystal structure, and the change of the hue of these materials was investigated. In addition, the cause of Ce
3+ ion color development in the sheelite structure was studied based on the result of substituting Bi
3+ ions for Ce
3+ ions and change of the hue of the compounds whose Mo
6+ ions are replaced with W
6+ ions. The result revealed that the absorption edge shifted to the longer wavelength side as the amount of the replaced Bi
3+ ions increased, and the hue of the product changed from yellow to reddish yellow. The changes in the chemical bonding nature of the crystal were found to give a great impact on the color development of the Ce
3+ ion. Although the Ce
3+ ion takes on the yellow hue in the sheelite crystal structure, its absorption edge can be shifted freely by generating the substitutional solid solution of metal ions with different electronegativity.
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