Know all about Aplite and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Aplite and Obsidian belong to Igneous Rocks.Texture of Aplite is Granular, Graphic whereas that of Obsidian is Glassy. Aplite appears Veined or Pebbled and Obsidian appears Shiny. The luster of Aplite is dull to pearly to subvitreous while that of Obsidian is vitreous. Aplite is available in black, grey, orange, pink, white colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones and that of Obsidian are creating artwork, mirror, used in aquariums.