This listing is for a stunning extra large Silver Sheen Obsidian crystal sphere that weighs almost 5 1/2 pounds! The sphere has a black base of Obsidian with amazing, bright silver sheen which is caused by tiny gas bubbles being trapped within the Obsidian. This is a wonderful statement piece!!! Diameter - 126.1 mm Diameter - 4.96 Inches Circumference - 15.60 Inches Obsidian is a powerful grounding stone that is known to shield against negativity and bring clarity to the mind. Obsidian acts as a protective shield against psychic attacks, negative energies, and emotional harm. People often use obsidian in meditation, dream work, and for its ability to clear confusion and promote emotional well-being. Element – Earth Planet – Earth Energy - Projective Chakra – Root and Third-Eye Zodiac – Capricorn and Virgo JDB0518