Obsidian is made from volcanic rock. It has been used by shamanic people as a seer stone. Native Americans used this gemstone for arrowheads.
The meaning of obsidian is for protection and invigoration. It can be used to find the essence of joy and to reduce tension. It is said to absorb negative energy and is a grounding stone.
Obsidian has also be used as a tool for inner focus. It may act as a mirror to show you negative aspects about yourself, which can then be cleansed and changed.
Another meaning of obsidian is to absorb anger, fear, and stress. By doing so, obsidian helps transmute negative energy into positive energy.
Obsidian has also been used for clear vision and to see into the future.