Lepidolite
Lepidolite · Mineral Specimen and Semi-Precious Decorative Stone
Crystal System
Monoclinic; typically found in massive, scaly, or granular aggregates, occasionally as pseudohexagonal tabular crystals.
Mineral Group
Silicates, specifically phyllosilicates (mica group).
Chemical Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2
Formation Process
Formed primarily in granitic pegmatites and high-temperature quartz veins through pneumatolytic to hydrothermal stages, enriched in lithium, rubidium, and cesium.
About This Crystal
This is a polished tumbling stone showing characteristic mottled patches of soft lilac, purple, and milky white. It is opaque to translucent with a vitreous to pearly luster typical of micas, presenting a smooth, rounded surface from tumbling.
Physical Characteristics
Color ranges from pink, lilac, and violet to greyish-white. Streak is white. Perfect basal cleavage in one direction, yielding thin, flexible flakes. Fracture is uneven. Specific gravity is approximately 2.8 to 2.9. Tenacity is sectile and flexible in thin layers.
Optical Properties
Biaxial (-) with refractive indices around nα = 1.530 - 1.548, nβ = 1.560 - 1.585, nγ = 1.565 - 1.590. Shows weak pleochroism in shades of pink and colorless.
Hardness & Durability
Origin Region
Found globally with notable deposits in Brazil, Madagascar, the United States (California), Russia, and Canada. Typically forms in lithium-rich granitic pegmatites.
Hardness & Durability
Mohs hardness of 2.5 to 4. Low durability due to perfect cleavage and soft nature; poor wearability for rings or daily-wear jewelry without protective settings.
Care & Maintenance
Clean gently with warm, soapy water and a soft cloth. Avoid ultrasonic cleaners, harsh chemicals, and prolonged exposure to direct sunlight which can cause fading. Store separately from harder stones to prevent scratching.
Rarity & Value
Common to uncommon as a mineral specimen; affordable price range. Often used as an ore of lithium and carved into decorative objects or tumbled stones.
Special Characteristics
High lithium content gives it a natural soothing association and makes it a significant lithium ore mineral. Exhibits characteristic mica-like micaceous cleavage and pearly sheen.
Lore & History
Historically valued as a major source of the element lithium. In modern metaphysical practices, lepidolite is often called the 'peace stone' or 'transition stone,' traditionally associated with emotional healing, reducing stress, and balancing the third eye and crown chakras.