Know all about Breccia and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Breccia belongs to Sedimentary Rocks while Obsidian belongs to Igneous Rocks.Texture of Breccia is Brecciated, Clastic whereas that of Obsidian is Glassy. Breccia appears Layered, Banded, Veined and Shiny and Obsidian appears Shiny. The luster of Breccia is dull to pearly while that of Obsidian is vitreous. Breccia is available in beige, black, blue, brown, buff, green, grey, orange, pink, purple, red, rust, white, yellow colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Breccia are creating artwork, gemstone, jewelry and that of Obsidian are creating artwork, mirror, used in aquariums.