Know all about Pseudotachylite and Tuff properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Tuff belongs to Igneous Rocks.Texture of Pseudotachylite is Quench whereas that of Tuff is Clastic, Pyroclastic. Pseudotachylite appears Dull and Soft and Tuff appears Dull, Vesicular and Foilated. The luster of Pseudotachylite is vitreous while that of Tuff is vitreous to dull. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Tuff is available in brown, grey, yellow colors. The commercial uses of Pseudotachylite and Tuff are creating artwork, gemstone.