Obsidian has no crystalline structure and is formed from molten lava that did not have time to form into glass. Often known as a powerful cleanser of psychic smog, it can shield against negativity and was often used as a scrying tool in the past.
As a protective stone, it shields against negativity and absorbs the negative energies from the environment. It is often used to block psychic attacks and negative spiritual influences.
It is often used for spiritual or healing work and it’s a wonderful grounding stone. Obsidian brings clarity to the mind and clears any confusion as well as constricting beliefs, it can also make it absolutely clear in what lies behind any mental distress or disease.
Read the article at the Source: Crystal of the Week: Obsidian