For the purpose of growing diopside (CaMgSi2O6) single crystals with high quality and high homogeneity from a melt, a Czochralski method has been applied. Using this method, a colorless-transparent diopside single crystal with a composition close to stoichiometric and approximately 15 mm in diameter by 70 mm in length was grown. Chemical analyses from different portions of the crystal and unit cell parameters are in good agreement with the published data of natural diopside (Cameron et al., 1973) and synthetic diopside single crystal (Takei et al., 1982).