Obsidian
Obsidian is an igneous rock that forms as lava from volcanic eruptions cools rapidly. It has a glassy luster and smooth, conchoidal fracturing. Obsidian can be black, brown, orange, green or grey depending on mineral inclusions. Iron and magnesium give obsidian its dark colors. It has an amorphous crystal structure.
Obsidian is regarded as a stone of protection and purification. It creates a shield against negativity and spiritual threats. Obsidian absorbs and transmutes challenging emotions and past traumas. It brings clarity to the mind and enhances concentration. Obsidian also promotes introspection and stimulates growth by releasing blockages.
In crystal healing, obsidian benefits the circulatory, digestive and skeletal systems. It detoxifies on a physical and emotional level. Obsidian sharpens mental acuity and dissolves energy blockages. It grounds spiritual energies into the body and aligns the chakras.