Know all about Tonalite and Skarn properties here. All properties of rocks are important as they define the type of rock and its application. Tonalite belongs to Igneous Rocks while Skarn belongs to Metamorphic Rocks.Texture of Tonalite is Phaneritic whereas that of Skarn is Earthy, Mud-rich, Rough. Tonalite appears Banded and Foilated and Skarn appears Dull. The luster of Tonalite is subvitreous to dull while that of Skarn is waxy and dull. Tonalite is available in black, brown, light to dark grey, white colors whereas Skarn is available in black, brown, colourless, green, grey, white colors. The commercial uses of Tonalite are cemetery markers, creating artwork and that of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo).