Know all about Obsidian and Websterite properties here. All properties of rocks are important as they define the type of rock and its application. Obsidian and Websterite belong to Igneous Rocks.Texture of Obsidian is Glassy whereas that of Websterite is Clastic, Granular, Phaneritic, Porphyritic. Obsidian appears Shiny and Websterite appears Layered, Banded, Veined and Shiny. The luster of Obsidian is vitreous while that of Websterite is dull to vitreous to submetallic. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors. The commercial uses of Obsidian are creating artwork, mirror, used in aquariums and that of Websterite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.