Blue Apatite
Fluorapatite (Apatite group) · Semi-Precious Gemstone / Collector Mineral
Crystal System
Hexagonal system; often occurs in prismatic crystals, massive forms, or as tumbled stones as seen in the image
Mineral Group
Phosphates
Chemical Formula
Ca5(PO4)3F with trace elements of Manganese (Mn) or rare earth elements for color
Formation Process
Igneous, Metamorphic, and Sedimentary; primarily forms in pegmatites, metamorphic limestones, and hydrothermal veins
About This Crystal
Deep neon-blue to teal color; translucent to nearly opaque in massive form; vitreous (glassy) to greasy luster; typically exhibits internal fractures and cloudiness
Physical Characteristics
Body color: Blue/Teal; Streak: White; Cleavage: Poor; Fracture: Conchoidal to uneven; Specific Gravity: 3.16–3.22; Fluorescence: Often yellow or orange under UV light
Optical Properties
Refractive Index: 1.63–1.64; Birefringence: 0.002–0.008 (weak); Pleochroism: Strongly blue to colorless/yellowish; Doubly refractive
Hardness & Durability
Origin Region
Madagascar (most likely source for this color), Brazil, Mexico, and Myanmar
Hardness & Durability
Mohs hardness: 5 (Defining mineral for 5 on the scale); Brittle tenacity; Low durability for daily rings/bracelets
Care & Maintenance
Avoid ultrasonic/steam cleaners; sensitive to acids and high heat; clean with warm soapy water and soft cloth; store separately from harder gems like quartz
Rarity & Value
Relatively common; value is determined by color intensity ('Neon Blue') and clarity; often inexpensive as tumbled stones or mineral specimens
Special Characteristics
Can exhibit chatoyancy (cat's eye effect) in specific fibrous specimens; notable for its intense color saturation that mimics Paraiba Tourmaline
Lore & History
Namely derived from the Greek 'apatau' (to deceive) because it was historically confused with other minerals like tourmaline. In metaphysical traditions, it is associated with the throat chakra, communication, and appetite suppression.