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