Know all about Pseudotachylite and Pegmatite properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Pegmatite belongs to Igneous Rocks.Texture of Pseudotachylite is Quench whereas that of Pegmatite is Pegmatitic. Pseudotachylite appears Dull and Soft and Pegmatite appears Layered, Banded, Veined and Shiny. The luster of Pseudotachylite is vitreous while that of Pegmatite is grainy, pearly and vitreous. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Pegmatite are creating artwork, jewelry, source of corundum, tourmalines, beryls and topaz.