Rhodonite
Rhodonite · Semi-Precious Gemstone and Decorative Stone
Crystal System
Triclinic, typically occurs in massive, granular, or compact habits rather than distinct crystals
Mineral Group
Silicates, specifically Inosilicates (single-chain silicates)
Chemical Formula
Mn2+SiO3
Formation Process
Metamorphic formation, typically occurring in manganese-rich metamorphic rocks and metasomatic deposits altered by hydrothermal fluids
About This Crystal
An opaque polished tower showing a vivid mosaic of deep raspberry-red to magenta rhodonite areas interwoven with dark black manganese oxide dendrites and veins, accented by patches of milky white quartz and grey-green silicate matrix
Physical Characteristics
Pink to red body color with black dendritic inclusions; white streak; perfect cleavage in two directions at roughly 90 degrees; conchoidal to uneven fracture; specific gravity around 3.4 to 3.7; brittle tenacity; vitreous to pearly luster
Optical Properties
Biaxial positive with a refractive index ranging from 1.733 to 1.744; exhibits weak to moderate pleochroism in shades of pink and red; doubly refractive
Hardness & Durability
Origin Region
Russia (Ural Mountains), Australia, Madagascar, Sweden, USA, and Peru
Hardness & Durability
Mohs hardness of 5.5 to 6.5; moderate toughness but vulnerable to heavy impacts due to distinct cleavage planes; sensitive to sudden temperature changes and harsh acids
Care & Maintenance
Clean gently with warm soapy water and a soft cloth; avoid ultrasonic cleaners, steamers, and harsh chemical detergents; store separately from harder gems to prevent scratching
Rarity & Value
Uncommon to Rare depending on the clarity and absence of excessive black webbing; high-quality material with pure pink color commands higher collector value; generally affordable to moderate price range
Special Characteristics
Distinctive contrasting black dendrites and veins of manganese oxide creating scenic, picture-stone patterns against a vibrant pink background
Lore & History
Historically used as an ornamental stone and occasionally worn as a talisman for emotional healing and compassion; associated traditionally with the heart chakra to calm anxiety and clear emotional wounds, though these are metaphysical beliefs and not scientific claims