Know all about Pseudotachylite and Breccia properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Breccia belongs to Sedimentary Rocks.Texture of Pseudotachylite is Quench whereas that of Breccia is Brecciated, Clastic. Pseudotachylite appears Dull and Soft and Breccia appears Layered, Banded, Veined and Shiny. The luster of Pseudotachylite is vitreous while that of Breccia is dull to pearly. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Breccia is available in beige, black, blue, brown, buff, green, grey, orange, pink, purple, red, rust, white, yellow colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Breccia are creating artwork, gemstone, jewelry.