Green Aventurine
Quartz var. Green Aventurine · Semi-Precious Gemstone
Crystal System
Trigonal, shaped into a cut and polished hexagonal crystal point
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2 with fuchsite inclusions
Formation Process
Hydrothermal and magmatic processes, forming within quartz veins, pegmatites, and granites, with chromium-rich micas incorporating during crystallization
About This Crystal
The specimen is a carved and polished crystal pendant featuring a hexagonal double-terminated point shape. It exhibits a vibrant, medium-green body color with a translucent to opaque appearance and a subtle glittering effect caused by tiny mineral inclusions.
Physical Characteristics
Color is vivid green due to fuchsite mica inclusions. Streak is white. Cleavage is none, fracture is conchoidal. Specific gravity is approximately 2.65. Tenacity is brittle.
Optical Properties
Refractive index ranges from 1.544 to 1.553. Birefringence is weak (0.009). Displays aventurescence, a glittering metallic sheen caused by light reflecting off tiny enclosed plate-like flakes.
Hardness & Durability
Origin Region
India, Brazil, Russia, Austria, and Tanzania; found in quartz veins and pegmatites
Hardness & Durability
Mohs hardness of 7. Good durability and toughness, making it suitable for everyday jewelry use like pendants and rings, though care should be taken against hard impacts.
Care & Maintenance
Clean with warm soapy water and a soft brush. Avoid harsh chemical cleaners and prolonged exposure to direct sunlight to prevent any potential fading of treated stones.
Rarity & Value
Common and widely available. Value is generally low to moderate, depending on the vibrancy of the green color and the density of the aventurescence effect.
Special Characteristics
Aventurescence (the shimmering or glittering effect produced by light reflecting from microscopic inclusions of green mica or fuchsite).
Lore & History
Often referred to as the Stone of Opportunity, green aventurine is traditionally associated with luck, abundance, and prosperity. In crystal healing practices, it is commonly linked to the heart chakra.