Obsidian is an earth-stone, activating the root chakra and grounding you in your connection to the Earth. It clears the aura of negative energy, and can also be used for scrying.Obsidian is a volcanic glass created when lava erupts from a volcanoc with certain conditions. Pure obsidian is dark, but impurities can result in dark green, brown, black, and gray coloring. Other impurities result in stones known as snowflake obsidian, golden obsidian, apache tears, and rainbow obsidian.