Know all about Theralite and Phonolite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Phonolite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Phonolite is Granular. Theralite appears Veined and Shiny and Phonolite appears Banded and Foilated. The luster of Theralite is waxy and dull while that of Phonolite is greasy to dull. Theralite is available in dark grey to black colors whereas Phonolite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Theralite and Phonolite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.