Green Aventurine
Quartz var. Aventurine · Semi-Precious Gemstone and Decorative Stone
Crystal System
Trigonal, massive or microcrystalline quartz aggregate habit
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2 (Silicon Dioxide) with chrome-bearing fuchsite mica inclusions
Formation Process
Hydrothermal and magmatic processes, specifically forming as quartz aggregates enclosing small flakes of other minerals like mica during crystallization
About This Crystal
A small carved gemstone figurine in the shape of a bear, displaying a vibrant green body color with translucent to semi-translucent transparency and a polished vitreous to greasy luster
Physical Characteristics
Vibrant green color, white streak, uneven to conchoidal fracture, no distinct cleavage planes, specific gravity around 2.65, brittle tenacity, non-magnetic, and generally inert under UV light
Optical Properties
Singly or doubly refractive with a refractive index of approximately 1.544 to 1.553, low birefringence, and displays aventurescence due to light reflecting off internal platelike mineral inclusions
Hardness & Durability
Origin Region
India, Brazil, Russia, Austria, and Tanzania; forms in hydrothermal veins and pegmatites
Hardness & Durability
Mohs hardness of 7 for the quartz base, good durability and wearability for jewelry, though softer mica inclusions can slightly affect surface polish durability
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoid harsh chemicals, ultrasonic cleaners, and prolonged exposure to direct sunlight to prevent any fading
Rarity & Value
Common and widely available; value depends primarily on color saturation, even distribution of aventurescence, and absence of fractures, typically very affordable
Special Characteristics
Aventurescence, an optical glittering effect caused by light reflection from microscopic plate-like inclusions (such as fuchsite) suspended within the quartz matrix
Lore & History
Historically used as a lucky talisman and amulet; in modern crystal healing, it is traditionally associated with the Heart Chakra, symbolizing prosperity, good fortune, and emotional healing, though these are cultural beliefs rather than scientific claims