Know all about Obsidian and Pyrolite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian and Pyrolite belong to Igneous Rocks.Texture of Obsidian is Glassy whereas that of Pyrolite is Phaneritic. Obsidian appears Shiny and Pyrolite appears Rough and Shiny. The luster of Obsidian is vitreous while that of Pyrolite is shiny. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Pyrolite is available in dark greenish - grey colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Pyrolite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.