Know all about Vogesite and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Vogesite and Obsidian belong to Igneous Rocks.Texture of Vogesite is Porphyritic whereas that of Obsidian is Glassy. Vogesite appears Dull, Banded and Foilated and Obsidian appears Shiny. The luster of Vogesite is subvitreous to dull while that of Obsidian is vitreous. Vogesite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Vogesite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo) and that of Obsidian are creating artwork, mirror, used in aquariums.