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