#OB-79B Black Obsidian, approximately 3.0-3.5 inches in size, and 0.65-0.82 pounds in weight. Each one unique. In limited quantity.
Caution: natural rough obsidian can have extremely sharp edges. Handle with care. Not for children.
Chemical Composition: an Igneous Silica (volcanic glass)
Hardness: 6-7 Occurence: Obsidian occurs in volcanic lava flows, from silica-rich magma that has come to the surface.
Metaphysical Properties: Excellent for grounding and protection. Obsidian wards off negativity. Useful for introspection - helps one to see where changes need to be made within oneself. Corresponding Astrological Sign: Sagittarius Chakra: 1st - Root chakra