Know all about Theralite and Tonalite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Tonalite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Tonalite is Phaneritic. Theralite appears Veined and Shiny and Tonalite appears Banded and Foilated. The luster of Theralite is waxy and dull while that of Tonalite is subvitreous to dull. Theralite is available in dark grey to black colors whereas Tonalite is available in black, brown, light to dark grey, white colors. The commercial uses of Theralite and Tonalite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.