Green Aventurine
Quartz var. Aventurine · Semi-Precious Gemstone
Crystal System
Trigonal, massive or microcrystalline quartz aggregate habit
Mineral Group
Silicates
Chemical Formula
SiO2 with fuchsite inclusions
Formation Process
Hydrothermal and magmatic processes, where silica-rich solutions precipitate quartz alongside platy mineral inclusions like fuchsite
About This Crystal
A tumbled, smooth, heart-shaped or irregular pebble displaying a vibrant translucent to sub-translucent green body color with darker green internal clouding and subtle shimmering speckles characteristic of aventurescence
Physical Characteristics
Green body color with a white streak, conchoidal fracture, lack of distinct cleavage, specific gravity of approximately 2.65, brittle tenacity, vitreous to greasy luster on polished surfaces
Optical Properties
Singly refractive or uniaxial positive with low birefringence, displaying aventurescence due to light reflecting off tiny included mineral flakes
Hardness & Durability
Origin Region
India, Brazil, Russia, and Austria; typically forms in quartz veins and pegmatites
Hardness & Durability
Mohs hardness of 7, making it durable for daily wear in jewelry despite lacking cleavage planes
Care & Maintenance
Clean with warm soapy water using a soft brush; avoid harsh chemicals and prolonged direct sunlight to prevent potential color alteration
Rarity & Value
Common; widely available and affordable, valued primarily for its attractive green color and shimmering optical effect
Special Characteristics
Aventurescence, caused by the reflection of light from microscopic platy inclusions such as green mica or fuchsite trapped inside the quartz matrix
Lore & History
Historically used as a talisman for luck, prosperity, and abundance; often associated with the heart chakra in modern crystal healing traditions