Know all about Claystone and Theralite properties here. All properties of rocks are important as they define the type of rock and its application. Claystone belongs to Sedimentary Rocks while Theralite belongs to Igneous Rocks.Texture of Claystone is Clastic whereas that of Theralite is Phaneritic. Claystone appears Rough and Dull and Theralite appears Veined and Shiny. The luster of Claystone is dull while that of Theralite is waxy and dull. Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors whereas Theralite is available in dark grey to black colors. The commercial uses of Claystone are pottery and that of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.