Approx 10cm diameter (100mm) this magnificent Smooth and flawless obsidian sphere really is a statement piece. 

Obsidian is a protective stone which is also said to ground any spiritual energy and dissolves worry and fear, which are helpful qualities when a person wants to work with divination of any kind.

Obsidian is a beautiful natural stone formed by cooled volcanic lava, Most black obsidians contain nano inclusions of magnetite. 

Obsidian is relatively soft with a typical hardness of 5 to 5.5