Green Aventurine
Quartz var. Aventurine · Semi-Precious Gemstone / Decorative Stone
Crystal System
Trigonal, massive or tumbled pebble habit
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2 with fuchsite inclusions
Formation Process
Hydrothermal and metamorphic formation where quartz precipitates rich in tiny platy mineral inclusions such as green mica (fuchsite)
About This Crystal
A smooth, tumbled pebble of translucent to semi-translucent green stone featuring a subtle shimmering effect caused by tiny reflective mineral inclusions beneath its polished surface
Physical Characteristics
Green body color with a white streak, conchoidal fracture, lack of distinct cleavage, specific gravity of approximately 2.65, and a vitreous to greasy luster when polished
Optical Properties
Singly or doubly refractive with a refractive index around 1.544 to 1.553, displaying a characteristic glittering or shimmering phenomenon known as aventurescence
Hardness & Durability
Origin Region
India, Brazil, Russia, and Austria; typically forms in quartz veins, pegmatites, and metamorphic environments
Hardness & Durability
Mohs hardness of 7, making it durable and suitable for everyday jewelry wear such as rings and pendants, with good toughness and stability against normal household chemicals
Care & Maintenance
Clean with warm soapy water and a soft cloth, avoid prolonged exposure to harsh chemicals and extreme heat, and store separately from softer gemstones to prevent scratching
Rarity & Value
Common and widely available, with very affordable pricing primarily determined by the quality of the green color and intensity of aventurescence
Special Characteristics
Aventurescence caused by microscopic reflective plate-like inclusions (usually green mica/fuchsite) that create a metallic sparkle effect when viewed under light
Lore & History
Historically associated with good luck, prosperity, and abundance, often referred to as the stone of opportunity; traditionally linked to the heart chakra in crystal healing practices