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