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