Know all about Obsidian and Schist properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian belongs to Igneous Rocks while Schist belongs to Metamorphic Rocks.Texture of Obsidian is Glassy whereas that of Schist is Foliated, Platy. Obsidian appears Shiny and Schist appears Layered and Shiny. The luster of Obsidian is vitreous while that of Schist is shiny. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Schist is available in black, blue, brown, dark brown, green, grey, silver colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Schist are used in aquariums, writing slates.