Characteristics related to grain size of rocks are called as texture. Here you can know more about texture of Pseudotachylite and Obsidian. Texture of Pseudotachylite is Quench whereas that of Obsidian is Glassy. Based on the texture of rocks, they are used for various purposes. Get detailed information about Pseudotachylite vs Obsidian texture, color, appearance and maintenance in the next section.