Know all about Rhyolite and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyolite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Rhyolite is Aphanitic, Glassy, Porphyritic whereas that of Pseudotachylite is Quench. Rhyolite appears Banded and Pseudotachylite appears Dull and Soft. The luster of Rhyolite is earthy while that of Pseudotachylite is vitreous. Rhyolite is available in grey, white, light black colors whereas Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Rhyolite are gemstone, laboratory bench tops, jewelry and that of Pseudotachylite are creating artwork, gemstone.