Green Fluorite
Fluorite · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Cubic (Isometric) system, typically forming cubic or octahedral crystals, though this specific specimen is a tumbled, rounded stone with smoothed edges.
Mineral Group
Halides
Chemical Formula
CaF2
Formation Process
Hydrothermal deposition from fluorine-bearing solutions at low to moderate temperatures, often filling cavities in sedimentary rocks like limestone.
About This Crystal
A tumbled, pale green stone with a smooth, polished surface and translucent to semi-transparent clarity. Internal fractures and wispy white inclusions are visible beneath the surface.
Physical Characteristics
Light green body color with a white streak. It exhibits perfect octahedral cleavage in four directions, though this tumbled sample lacks sharp planes. Specific gravity is approximately 3.18, and it is brittle with an uneven to conchoidal fracture. Often exhibits strong blue or violet fluorescence under UV light.
Optical Properties
Singly refractive with a low refractive index of approximately 1.434. It lacks birefringence and pleochroism.
Hardness & Durability
Origin Region
Found globally with notable deposits in China, Mexico, South Africa, and the USA. It typically forms in hydrothermal veins and associated with metallic ores.
Hardness & Durability
Mohs hardness of 4, making it very soft and easily scratched by a steel knife or quartz. Poor durability for rings or daily-wear jewelry due to softness and perfect cleavage.
Care & Maintenance
Clean with mild soapy water and a soft cloth. Avoid ultrasonic cleaners, steam, harsh chemicals, and prolonged exposure to direct sunlight to prevent fading.
Rarity & Value
Common mineral worldwide. Value is generally low to moderate, depending on size, clarity, and color saturation. Treatments are rare for raw/tumbled stones.
Special Characteristics
Notable for its strong fluorescence under ultraviolet light and very low hardness relative to its glassy, crystalline appearance.
Lore & History
Historically used for carving ornamental objects and vases by ancient Romans and Egyptians. In modern crystal healing, green fluorite is traditionally associated with the heart chakra, mental clarity, and absorbing negative energies, though these are cultural beliefs rather than scientific properties.