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