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