Know all about Soapstone and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Soapstone belongs to Metamorphic Rocks while Obsidian belongs to Igneous Rocks.Texture of Soapstone is Polished whereas that of Obsidian is Glassy. Soapstone appears Dull, Banded and Foilated and Obsidian appears Shiny. The luster of Soapstone is greasy while that of Obsidian is vitreous. Soapstone is available in black, black to grey, green, grey colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Soapstone are cemetery markers, creating artwork, gemstone, jewelry, manufacture of soap, solvents, dyes, plastics and fibres, production of lime, source of magnesia (mgo) and that of Obsidian are creating artwork, mirror, used in aquariums.