Beautiful Rhodonite Pendant in silver color setting! Rhodonite is a mineral that is often used as a gemstone. It's a manganese silicate (MnSiO3) and has a distinctive pink to rose-red color. Rhodonite is often associated with quartz and other minerals, and it's commonly found in metamorphic rocks. It's considered a relatively rare mineral, and it's prized by collectors for its beauty and rarity.