Apatite
Fluorapatite · Mineral Specimen and Semi-Precious Gemstone.
Crystal System
Hexagonal system, typically occurring in prismatic crystals or as massive, granular, and nodular forms.
Mineral Group
Phosphates, specifically the apatite supergroup.
Chemical Formula
Ca5(PO4)3(F,Cl,OH)
Formation Process
Forms in igneous, metamorphic, and sedimentary environments, frequently crystallizing in pegmatites and hydrothermal veins.
About This Crystal
A small, translucent to transparent, blue-green crystal fragment exhibiting a vitreous luster and irregular or conchoidal fracture surfaces.
Physical Characteristics
Color ranges from teal, blue, to green; white streak; Mohs hardness of 5; brittle tenacity; specific gravity around 3.1 to 3.2.
Optical Properties
Uniaxial negative with moderate birefringence, often showing weak to moderate dichroism in colored varieties.
Hardness & Durability
Origin Region
Found globally with notable sources in Madagascar, Brazil, Mexico, Myanmar, and the United States.
Hardness & Durability
Mohs hardness of 5, making it relatively soft and susceptible to scratching; distinct cleavage makes it fragile and not ideal for everyday high-impact jewelry.
Care & Maintenance
Clean with warm, soapy water and a soft brush; avoid ultrasonic cleaners, harsh chemicals, and prolonged exposure to high heat or direct sunlight.
Rarity & Value
Common as a mineral, but gem-quality transparent specimens are moderately rare and valued based on color saturation and clarity.
Special Characteristics
Can exhibit weak fluorescence under ultraviolet light and sometimes displays chatoyancy when cut en cabochon.
Lore & History
Associated traditionally with personal growth, motivation, and the third eye or throat chakras in modern crystal healing lore.