Know all about Theralite and Hornfels properties here. All properties of rocks are important as they define the type of rock and its application. Theralite belongs to Igneous Rocks while Hornfels belongs to Metamorphic Rocks.Texture of Theralite is Phaneritic whereas that of Hornfels is Granular, Platy. Theralite appears Veined and Shiny and Hornfels appears Dull. The luster of Theralite is waxy and dull while that of Hornfels is shiny. Theralite is available in dark grey to black colors whereas Hornfels is available in brown, dark greenish - grey, green, reddish brown colors. The commercial uses of Theralite and Hornfels are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.