Green Quartz
Quartz var. Green Quartz · Semi-Precious Gemstone and Mineral Specimen
Crystal System
Trigonal, typically forming prismatic crystals, massive aggregates, or rounded tumbled stones.
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2
Formation Process
Hydrothermal and igneous formation, crystallizing from silica-rich fluids at varying temperatures and pressures within rock cavities.
About This Crystal
A tumbled, pale yellowish-green to green quartz stone showing a polished, glossy surface with internal fractures and translucent clarity, typical of tumbled quartz.
Physical Characteristics
Color ranges from pale green to yellowish-green; white streak; no true cleavage; conchoidal fracture; specific gravity around 2.65; brittle tenacity; exhibits piezoelectric properties.
Optical Properties
Singly refractive or uniaxial positive with low birefringence (0.009), vitreous luster, and no notable pleochroism in pale varieties.
Hardness & Durability
Origin Region
Found globally; notable sources include Brazil, Madagascar, and the United States, typically forming in hydrothermal veins, pegmatites, and sedimentary environments.
Hardness & Durability
Mohs hardness of 7, making it durable and suitable for everyday jewelry use, though internal fractures may create points of weakness.
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh chemicals and prolonged direct sunlight to prevent potential color fading.
Rarity & Value
Common; widely accessible and affordable, with value depending on clarity, color saturation, and size.
Special Characteristics
May exhibit piezoelectric and pyroelectric properties under mechanical stress or temperature changes.
Lore & History
Often associated with the heart chakra in modern crystal healing traditions, symbolizing growth, renewal, and emotional balance, though these are cultural beliefs rather than scientifically validated properties.