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