Know all about Conglomerate and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Conglomerate belongs to Sedimentary Rocks while Obsidian belongs to Igneous Rocks.Texture of Conglomerate is Clastic whereas that of Obsidian is Glassy. Conglomerate appears Shiny and Rounded and Obsidian appears Shiny. The luster of Conglomerate is dull while that of Obsidian is vitreous. Conglomerate is available in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Conglomerate are cemetery markers, in aquifers, tombstones and that of Obsidian are creating artwork, mirror, used in aquariums.