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