Green Aventurine
Quartz var. Aventurine · Semi-Precious Gemstone and Decorative Stone
Crystal System
Trigonal, massive habit with polished geometric carved shape
Mineral Group
Silicates - Tectosilicates
Chemical Formula
SiO2 with fuchsite inclusions
Formation Process
Hydrothermal and metamorphic processes involving quartz precipitation with concurrent or subsequent incorporation of chrome-bearing platy minerals
About This Crystal
A polished green stone carved into a faceted or geometric shape, exhibiting a translucent to opaque appearance with a waxy to vitreous luster and characteristic sparkling inclusions of fuchsite mica
Physical Characteristics
Green body color with white streak, uneven to conchoidal fracture, no distinct cleavage, specific gravity of approximately 2.65, brittle tenacity, and typically inert under UV light
Optical Properties
Singly or doubly refractive with a refractive index of 1.544 to 1.553, showing a characteristic glittery sheen known as aventurescence caused by embedded mica platelets
Hardness & Durability
Origin Region
India, Brazil, Russia, and Austria, forming in hydrothermal veins and pegmatites
Hardness & Durability
Mohs hardness of 7, good durability and toughness, suitable for daily wear in jewelry though surface scratches can dull the polish over time
Care & Maintenance
Clean with warm soapy water and a soft brush, avoid harsh chemicals, prolonged direct sunlight, and store separately from softer materials to prevent scratching
Rarity & Value
Common and widely available, with value determined by color saturation, evenness of the green tone, and intensity of the aventurescence sparkle
Special Characteristics
Displays aventurescence, a glittering metallic or shimmering optical effect caused by light reflecting off tiny included flakes of fuchsite or other minerals
Lore & History
Often referred to as the Stone of Opportunity, traditionally associated with the heart chakra, attracting luck, abundance, and emotional tranquility in crystal healing lore