Know all about Variolite and Pyrolite properties here. All properties of rocks are important as they define the type of rock and its application. Variolite and Pyrolite belong to Igneous Rocks.Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Pyrolite is Phaneritic. Variolite appears Dull and Soft and Pyrolite appears Rough and Shiny. The luster of Variolite is not available while that of Pyrolite is shiny. Variolite is available in black, brown, light to dark grey colors whereas Pyrolite is available in dark greenish - grey colors. The commercial uses of Variolite are cemetery markers, creating artwork and that of Pyrolite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.