Know all about Obsidian and Serpentinite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian belongs to Igneous Rocks while Serpentinite belongs to Metamorphic Rocks.Texture of Obsidian is Glassy whereas that of Serpentinite is Earthy. Obsidian appears Shiny and Serpentinite appears Rough and Dull. The luster of Obsidian is vitreous while that of Serpentinite is waxy and dull. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Serpentinite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Serpentinite are commemorative tablets, creating artwork.