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