Girasol Quartz
Silicon Dioxide var. Girasol Quartz · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Trigonal; typically occurs in massive or globular habits rather than distinct crystals
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2 with trace Al, Ti and microscopic fluid inclusions
Formation Process
Magmatic/Hydrothermal; formed as pegmatites cool slowly allowing microscopic fluid inclusions to be trapped
About This Crystal
A translucent to milky variety of quartz with a hazy, misty appearance. It exhibits a soft, internal glow and vitreous luster when polished.
Physical Characteristics
Color: Milky white to pale blue; Streak: White; Cleavage: None; Fracture: Conchoidal; Specific Gravity: 2.65; Fluorescence: Often inert or weak yellow-green
Optical Properties
Refractive Index: 1.544-1.553; Birefringence: 0.009; Weak pleochroism; Exhibits a hazy 'glow' known as the Girasol effect caused by light scattering
Hardness & Durability
Origin Region
Primarily Madagascar; also found in Brazil and South Africa in pegmatite formations
Hardness & Durability
Mohs Hardness: 7; High durability and toughness; Excellent for all jewelry types
Care & Maintenance
Clean with warm soapy water; avoid extreme temperature shock; safe from most household chemicals and sunlight
Rarity & Value
Relatively common; valued for clarity of glow; cheaper than moonstone but more expensive than standard milky quartz
Special Characteristics
Girasol effect (a hazy, floating internal light similar to adularescence but caused by scattering rather than interference)
Lore & History
Historically used as a 'mirror of the soul'; culturally linked to Madagascar lore; associated with the Crown Chakra and balancing emotions in traditional practices