Obsidian's metaphysical properties include potent protection against negative energy, a strong grounding effect that connects you to the earth, and the ability to promote spiritual growth by revealing hidden truths and releasing emotional blockages. Obsidian is primarily composed of silicon dioxide (SiO2), with a high silica content of around 70-75%, classifying it as a material rich in feldspar and sicon. It contains varying amounts of other metal oxides, including aluminum, iron, magnesium, potassium, and sodium, which influence its color and properties. Unlike crystalline rocks, obsidian is a volcanic glass formed from the rapid cooling of lava, resulting in a non-crystalline, or amorphous, structure.