Obsidian is a naturally forming volcanic glass. This makes it neither a crystal nor a mineral, but I refer to it as a mineral. I have a couple of specimens, a black tumbled stone and a sphere of Snowflake Obsidian, but I had never seen Mahogany Obsidian prior to finding this gorgeous piece in a local shop called Mystic Moraine Minerals. The staff is amazing and very knowledgeable. They offer a wide range of crystals and mineral for sale, both raw and tumbled. They also offer classes in wire wrapping and other interesting crystal related things. If you would like to check out the Facebook page you can find it at @MysticMoraine  

Like all Obsidian, this variety can be found anywhere there is or has been volcanic activity, but two nice sources are China and India. It gets its beautiful color from either Magnetite or Hematite inclusions in the molten material. As the lava cools it can form…