Characteristics related to grain size of rocks are called as texture. Here you can know more about texture of Variolite and Quartzite. Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Quartzite is Foliated, Granular. Based on the texture of rocks, they are used for various purposes. Get detailed information about Variolite vs Quartzite texture, color, appearance and maintenance in the next section.