Know all about Pseudotachylite and Diorite properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Diorite belongs to Igneous Rocks.Texture of Pseudotachylite is Quench whereas that of Diorite is Phaneritic. Pseudotachylite appears Dull and Soft and Diorite appears Shiny. The luster of Pseudotachylite is vitreous while that of Diorite is shiny. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Diorite is available in black, brown, light to dark grey, white colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Diorite are creating artwork, curling.