OBSIDIAN
Chemical Composition: an Igneous Silica (volcanic glass) Hardness: 6-7 Occurrence: 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 ************************************************* Obsidian and its properties Physical properties of obsidian: Obsidian is a glassy volcanic rock with a high vitreous luster. It often leaves sharp edges when it fractures, and has long been used for tools and weapons. It can be black, gray, brown, or green. Obsidian has a hardness of 5 to 5 1/2 on the Mohs' scale, and a specific gravity of 2.30 to 2.60. Metaphysical properties of obsidian: ... Obsidian is said to improve vision. This effect is said to help both your outer, physical vis