Obsidian is a protective, stabilizing, and grounding stone. It is said to dispel negativity, alleviate depression, and protect us from emotional and physical harm. Obsidian is believed to help us to see what changes we need to make in our lives, no matter how difficult, and it gives us the power and wisdom to move forward. It allows us to become aware of our flaws and gives us insight into how correct them. Obsidian is said to keep negative thoughts at bay, help us to find hidden abilities, increase self-discipline, enhance concentration, and conquer obsessions. It is thought to foster honesty, loyalty, and responsibility. Obsidian is associated with the Zodiac sign of Sagittarius.