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