Know all about Variolite and Sandstone properties here. All properties of rocks are important as they define the type of rock and its application. Variolite belongs to Igneous Rocks while Sandstone belongs to Sedimentary Rocks.Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Sandstone is Clastic, Granular, Rough. Variolite appears Dull and Soft and Sandstone appears Rough. The luster of Variolite is not available while that of Sandstone is dull. Variolite is available in black, brown, light to dark grey colors whereas Sandstone is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Variolite are cemetery markers, creating artwork and that of Sandstone are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums.