Know all about Theralite and Felsite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Felsite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Felsite is Arborescent Patterned, Vitreous. Theralite appears Veined and Shiny and Felsite appears Layered, Banded, Veined and Shiny. The luster of Theralite is waxy and dull while that of Felsite is vitreous. Theralite is available in dark grey to black colors whereas Felsite is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones and that of Felsite are mirror, jewelry.