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