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