Know all about Obsidian and Charnockite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian and Charnockite belong to Igneous Rocks.Texture of Obsidian is Glassy whereas that of Charnockite is Granular. Obsidian appears Shiny and Charnockite appears Veined or Pebbled. The luster of Obsidian is vitreous while that of Charnockite is not available. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Charnockite is available in black, grey, orange, pink, white colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Charnockite are curling, gemstone, laboratory bench tops, tombstones.