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