Know all about Theralite and Rhyolite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Rhyolite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Rhyolite is Aphanitic, Glassy, Porphyritic. Theralite appears Veined and Shiny and Rhyolite appears Banded. The luster of Theralite is waxy and dull while that of Rhyolite is earthy. Theralite is available in dark grey to black colors whereas Rhyolite is available in grey, white, light black colors. The commercial uses of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones and that of Rhyolite are gemstone, laboratory bench tops, jewelry.