Rhodonite

Rhodonite is a manganese silicate mineral characterized by its distinctive pink to reddish-brown coloration. Its chemical formula is MnFeSi2O6 and it crystallizes in the orthorhombic system. The mineral typically forms in low‑temperature metamorphic environments, often replacing mica in metamorphosed sedimentary rocks. It is commonly found in the United States, particularly in Alabama and the Catskills of New York, as well as in South Africa, Madagascar, and Syria.

Physically, rhodonite has a vitreous to waxy luster and a Mohs hardness ranging from 5.5 to 6. It exhibits a tendency to show fibrous or "tartan" patterns caused by intergrowths of manganese and iron, which give it its name meaning “tartan” in Greek. The mineral can display pleochroism, showing different shades of red or gray when viewed from different angles.

In gemology rhodonite is classified as a semi‑precious gemstone. While it is not as hard as many other gemstones, its color and patterns make it popular for ornamental carving, with stones used in pendants, rings, and carved figurines. It is typically polished into smooth surfaces for decorative or jewelry use.

Early human cultures attributed various symbolic meanings to rhodonite. In the 17th and 18th centuries, it was believed to alter the color of blood and was used in medical applications to treat conditions such as bruises. Modern metaphysical traditions regard rhodonite as a stone for emotional healing, compassion, and balancing.

Rhodonite is also an important ore of manganese, contributing to the metal’s industrial uses in steel production and batteries. In mineral collections it is prized for its distinct textures and figurative patterns, and it continues to be harvested for both decorative and functional purposes.