Know all about Rhyolite and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Rhyolite and Obsidian belong to Igneous Rocks.Texture of Rhyolite is Aphanitic, Glassy, Porphyritic whereas that of Obsidian is Glassy. Rhyolite appears Banded and Obsidian appears Shiny. The luster of Rhyolite is earthy while that of Obsidian is vitreous. Rhyolite is available in grey, white, light black colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Rhyolite are gemstone, laboratory bench tops, jewelry and that of Obsidian are creating artwork, mirror, used in aquariums.