JIC Gem Natural Black Obsidian Sphere Ball Fengshui Healing Decoration (2.2", 55mm) 2.2-2.3", 55~58mm, Natural Obsidian Sphere Ball, around 260-280 Grams. 100% Natural Obsidian, no any treatment. 100% Hand Carving. Similar as picture shown, might be a little different due to Natural material & hand carving. Obsidian is a very protective stone, and is excellent for removing negativity. It is also excellent protection against psychic attacks. A very powerful Fengshui Sphere for protect home. Bigger size More powerful.