Black Obsidian

•  Black obsidian is often associated with grounding energy and providing a sense of stability.
• It is believed to help anchor one's energy to the Earth, promoting a feeling of balance and centeredness.Black obsidian is often used for spiritual cleansing and purification.
• It is believed to absorb and transmute negative energies, including psychic pollution or energetic attachments.It is commonly used in energy work, meditation, and spiritual practices to clear and purify one's aura and environment.

http://www.bgtl.org.in/Report.aspx?report_no=228500001376