Know all about Obsidian and Evaporite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian belongs to Igneous Rocks while Evaporite belongs to Sedimentary Rocks.Texture of Obsidian is Glassy whereas that of Evaporite is Earthy. Obsidian appears Shiny and Evaporite appears Glassy, Vesicular and Foilated. The luster of Obsidian is vitreous while that of Evaporite is subvitreous to dull. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Evaporite is available in colourless, green, grey, silver, white colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Evaporite are used in the manufacture of ceramic powder, used in the preparation of sulfuric acid and silicon diborite.