Natural Carved 40mm Tumbled Black Obsidian Sphere Ball Healing Crystal of banshren Material: Black Obsidian Weight: Approximately 80g Size: Approximately 40mm (that is about 1.6 inch) Quantity: 1pc Obsidian is extremely evil evil spirit function, it can avoid the interference of negative energy and strongly defuse negative energy, but also to remove the unpleasant musty and adverse, it's best for personal wear or is placed at home. General with the right hand!