Rhodonite is a manganese silicate mineral with the chemical formula (Mn,Fe,Mg,Ca)SiO₃. It is known for its distinctive rose-pink to red color, often with black veining caused by manganese oxides. Rhodonite has a Mohs hardness of 5.5 to 6.5, making it relatively durable for jewelry and carvings. It forms in metamorphic rocks and manganese-rich deposits. Major sources include Russia, Australia, Sweden, Peru, Brazil, Canada, and the United States. Rhodonite is commonly cut into cabochons, beads, and decorative objects, prized for its striking contrast between pink and black.