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