Know all about Obsidian and Appinite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian and Appinite belong to Igneous Rocks.Texture of Obsidian is Glassy whereas that of Appinite is Porphyritic. Obsidian appears Shiny and Appinite appears Dull, Banded and Foilated. The luster of Obsidian is vitreous while that of Appinite is subvitreous to dull. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Appinite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Appinite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner.