Know all about Pegmatite and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Pegmatite and Obsidian belong to Igneous Rocks.Texture of Pegmatite is Pegmatitic whereas that of Obsidian is Glassy. Pegmatite appears Layered, Banded, Veined and Shiny and Obsidian appears Shiny. The luster of Pegmatite is grainy, pearly and vitreous while that of Obsidian is vitreous. Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Pegmatite are creating artwork, jewelry, source of corundum, tourmalines, beryls and topaz and that of Obsidian are creating artwork, mirror, used in aquariums.