Obsidian is a natural volcanic glass, appearing in a range of colours. It is one of the best grounding and base chakra stones. It encourages stability and shields from negative energies.
Chemical Composition: an Igneous Silica (volcanic glass)
Occurence: Obsidian occurs in volcanic lava flows, from silica-rich magma that has come to the surface.
Metaphysical Properties: Excellent for grounding and protection. 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