Green Aventurine
Quartz var. Aventurine · Semi-Precious Gemstone
Crystal System
Trigonal, massive to granular habit
Mineral Group
Silicates (Tectosilicate)
Chemical Formula
SiO2 with fuchsite or mica inclusions
Formation Process
Hydrothermal and pegmatitic formation, often occurring in metamorphic schists and quartz veins
About This Crystal
A tumbled and polished smooth pebble of translucent to opaque light to medium green quartz with characteristic glittering inclusions known as aventurescence
Physical Characteristics
Green body color with white streaks or clouds, conchoidal fracture, lack of cleavage, specific gravity of approximately 2.65, vitreous to greasy luster when polished
Optical Properties
Uniaxial positive, refractive index of 1.544 to 1.553, displays aventurescence due to platy mineral inclusions reflecting light
Hardness & Durability
Origin Region
India, Brazil, Russia, Austria, and Tanzania
Hardness & Durability
Mohs hardness of 7, tough and durable due to interlocking quartz grains, suitable for daily jewelry wear
Care & Maintenance
Clean with warm soapy water and a soft cloth, avoid harsh chemicals and prolonged direct sunlight
Rarity & Value
Common, highly accessible, affordable price range, generally untreated
Special Characteristics
Aventurescence (glittering or shimmering metallic effect caused by inclusions of fuchsite mica)
Lore & History
Often regarded as the stone of opportunity and luck, associated with the heart chakra in traditional crystal healing