Psilomelane is a hard black manganese oxide mineral typically found in oxidised zones of manganese-rich deposits. It forms botryoidal, stalactitic, or earthy masses with a smooth, shiny, almost metallic lustre, often exhibiting intricate banding of black and dark grey. In folklore, Psilomelane was considered a protective stone, guarding against negative energy. Metaphysically, it is believed to enhance endurance, grounding, and emotional strength. It is said to absorb negativity, promote mental clarity, and support perseverance through challenging situations.