Obsidian: This stone is a very strong protector from both inside and outside forces. It will bring the cause of the distress out into the open, and is not the choice for the faint-hearted. If you don’t really want to deal with an issue, Obsidian is not the best choice for you. A strong lover of the truth, will bring untruths out into the open to be examined and dealt with directly. The darker the color, the stronger and less gentle this action will be.