Obsidian is molten lava that cooled so quickly it didn't have time to crystalize.  Obsidian is a stone without boundaries or limitations. It works very fast and with great power.  It is a very powerful protective stone and repels negativity.  It brings clarity to the mind and clears confusion and constricting beliefs..
 
Each stone is approximatley 5-10g in weight.
Size and shape may vary form the picture shown
Stones sold individually