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