Know all about Oolite and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Oolite belongs to Sedimentary Rocks while Obsidian belongs to Igneous Rocks.Texture of Oolite is Clastic or Non-Clastic whereas that of Obsidian is Glassy. Oolite appears Rounded and Rough and Obsidian appears Shiny. The luster of Oolite is pearly to shiny while that of Obsidian is vitreous. Oolite is available in black, blue, brown, cream, green, grey, pink, red, silver, white, yellow colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Oolite are creating artwork, jewelry, used in aquariums and that of Obsidian are creating artwork, mirror, used in aquariums.