Know all about Theralite and Variolite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Variolite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Theralite appears Veined and Shiny and Variolite appears Dull and Soft. The luster of Theralite is waxy and dull while that of Variolite is not available. Theralite is available in dark grey to black colors whereas Variolite is available in black, brown, light to dark grey colors. The commercial uses of Theralite and Variolite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.