Black Obsidian is a stone without boundaries or limitations. As a result, it works extremely fast and with great power. Its truth-enhancing, reflective qualities are merciless in exposing flaws, weaknesses and blockages. It is a very powerful and creative stone, and self-control is increased by the use of this stone. Black obsidian is protective, as it repels negativity and disperses unloving thoughts. It facilitates the release of old loves and provides support during change.