Know all about Tonalite and Syenite properties here. All properties of rocks are important as they define the type of rock and its application. Tonalite and Syenite belong to Igneous Rocks.Texture of Tonalite is Phaneritic whereas that of Syenite is Earthy. Tonalite appears Banded and Foilated and Syenite appears Banded and Foilated. The luster of Tonalite and Syenite is subvitreous to dull. Tonalite is available in black, brown, light to dark grey, white colors whereas Syenite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Tonalite and Syenite are cemetery markers, creating artwork.