Know all about Theralite and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Theralite is Phaneritic whereas that of Pseudotachylite is Quench. Theralite appears Veined and Shiny and Pseudotachylite appears Dull and Soft. The luster of Theralite is waxy and dull while that of Pseudotachylite is vitreous. Theralite is available in dark grey to black colors whereas Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones and that of Pseudotachylite are creating artwork, gemstone.