Physical Characteristics: Obsidian is a silica volcanic stone with a hardness of 5 - 6. It resembles glass and occurs in several colors, the most common of which is black. Like glass, it often breaks with sharp edges, and has been used in tool-making for arrowheads, knives, etc. Mahogany Obsidian has splotches of mahogany brown due to oxidized Magnetite and/or Hematite.
Metaphysical Properties: In addition to the properties of Obsidian, Mahogany Obsidian also can connect the sacral chakra to the solar plexus, allowing the non-emotional evaluation of sexuality. It can also aid in releasing energy blockages.