Green Aventurine
Quartz var. Green Aventurine · Semi-Precious Gemstone
Crystal System
Trigonal, massive or quartz aggregate habit
Mineral Group
Silicates
Chemical Formula
SiO2 with fuchsite or green mica inclusions
Formation Process
Hydrothermal and magmatic processes, forming within pegmatites and quartz veins
About This Crystal
A smooth, polished oval gemstone displaying a translucent to opaque pale green body with subtle lighter color banding and characteristic glittering aventurescence.
Physical Characteristics
Green body color with white streak; conchoidal fracture; lacks prominent cleavage; specific gravity around 2.65; vitreous to greasy luster when polished
Optical Properties
Singly or doubly refractive aggregate with a refractive index of approximately 1.544-1.553; displays aventurescence due to tiny platelike inclusions
Hardness & Durability
Origin Region
India, Brazil, Russia, and Madagascar
Hardness & Durability
Mohs hardness of 7; good durability for general jewelry use with fair toughness
Care & Maintenance
Clean with warm soapy water; avoid harsh chemicals and prolonged exposure to direct sunlight
Rarity & Value
Common and widely accessible; value is relatively low and determined primarily by color saturation and intensity of aventurescence
Special Characteristics
Aventurescence (a metallic glistening or shimmering effect caused by light reflecting off mineral inclusions)
Lore & History
Historically used as a talisman for luck and prosperity; traditionally associated with the heart chakra in metaphysical crystal healing practices