Green Aventurine
Quartz var. Green Aventurine · Semi-Precious Gemstone
Crystal System
Trigonal, massive habit with quartz microcrystalline structure
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2 with fuchsite inclusions
Formation Process
Hydrothermal veins and pegmatites, often incorporating chromium-rich mica flakes during formation
About This Crystal
A tumbled, smooth, pebble-like specimen featuring a vibrant forest green to translucent sea green color with characteristic glittering metallic inclusions known as aventurescence
Physical Characteristics
Color ranges from light to dark green with a white streak, conchoidal fracture, lacks distinct cleavage, specific gravity of approximately 2.65, and vitreous to greasy luster
Optical Properties
Singly or doubly refractive aggregate with a refractive index around 1.544-1.553, exhibiting notable aventurescence due to platelike inclusions reflecting light
Hardness & Durability
Origin Region
India, Brazil, Russia, Austria, and Tanzania
Hardness & Durability
Mohs hardness of 7, making it durable for most jewelry uses with good toughness, though care should be taken to avoid impact fractures
Care & Maintenance
Clean with warm soapy water and a soft cloth, avoid harsh chemical cleaners, prolonged direct sunlight, and ultrasonic cleaners if heavily fractured
Rarity & Value
Common and widely available, generally inexpensive with value determined by color saturation, uniformity, and the density of the glittering inclusions
Special Characteristics
Aventurescence (a glittering metallic sheen caused by light reflecting off embedded mineral flakes like fuchsite or hematite)
Lore & History
Historically used as an amulet for good luck and prosperity. In crystal healing, it is traditionally associated with the Heart Chakra and believed to attract wealth, abundance, and emotional tranquility, though these are traditional beliefs rather than scientific claims