Know all about Obsidian and Felsite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian and Felsite belong to Igneous Rocks.Texture of Obsidian is Glassy whereas that of Felsite is Arborescent Patterned, Vitreous. Obsidian appears Shiny and Felsite appears Layered, Banded, Veined and Shiny. The luster of Obsidian and Felsite is vitreous. Obsidian and Felsite are available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Felsite are mirror, jewelry.