Know all about Theralite and Itacolumite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite belongs to Igneous Rocks while Itacolumite belongs to Sedimentary Rocks.Texture of Theralite is Phaneritic whereas that of Itacolumite is Clastic, Granular, Rough. Theralite appears Veined and Shiny and Itacolumite appears Rough. The luster of Theralite is waxy and dull while that of Itacolumite is dull. Theralite is available in dark grey to black colors whereas Itacolumite is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones and that of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.