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