Fluorite
Fluorite · Mineral Specimen and Semi-Precious Stone
Crystal System
Cubic (Isometric), typically forming octahedral, cubic, or massive habits
Mineral Group
Halides
Chemical Formula
CaF2
Formation Process
Hydrothermal and sedimentary processes, crystallizing from fluorine-bearing solutions at low to moderate temperatures.
About This Crystal
Small, translucent to transparent purple crystalline fragment with a vitreous luster, showing distinctive planar cleavage planes and natural octahedral/triangular facets typical of fluorite.
Physical Characteristics
Purple body color, white streak, perfect octahedral cleavage in four directions, conchoidal to uneven fracture, specific gravity of approximately 3.18, brittle tenacity, and often strong blue or violet fluorescence under UV light.
Optical Properties
Isotropic, singly refractive, refractive index of approximately 1.434, no pleochroism.
Hardness & Durability
Origin Region
Found worldwide, with notable deposits in China, Mexico, South Africa, UK, and the USA. Forms in hydrothermal veins and sedimentary deposits.
Hardness & Durability
Mohs hardness of 4, poor toughness due to perfect cleavage, sensitive to thermal shock and strong chemicals, very soft for everyday jewelry use.
Care & Maintenance
Clean gently with warm soapy water. Avoid ultrasonic cleaners, harsh chemicals, prolonged exposure to direct sunlight, and hard impacts due to low hardness and easy cleavage.
Rarity & Value
Common mineral worldwide, though high-clarity gem-grade specimens and rare color varieties are valued by collectors. Generally affordable.
Special Characteristics
Often exhibits strong fluorescence under ultraviolet light, thermoluminescence, and perfect octahedral cleavage.
Lore & History
Historically used for ornamental carvings and vases since ancient Roman times. In modern metaphysical practices, fluorite is traditionally associated with mental clarity, focus, and balancing the third eye chakra.