mineral

Aventurine (Green Quartz)

Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Green with mottled inclusions; Luster: Vitreous to waxy; Crystal structure: Trigonal; Specific gravity: 2.64-2.69; Features: Aventuressence (sparkling effect)

Hardness: 6
Color: Green with mottled inclusions
Luster: Vitreous to waxy

Identified July 8, 2026More mineral →

Explore Aventurine (Green Quartz) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6.5-7 (Mohs); Color: Green with mottled inclusions; Luster: Vitreous to waxy; Crystal structure: Trigonal; Specific gravity: 2.64-2.69; Features: Aventuressence (sparkling effect)

Formation & geological history

Formed as a metamorphic rock (quartzite) or within igneous veins where quartz contains inclusions of Fuchsite (green mica). Found in high-grade metamorphic environments.

Uses & applications

Commonly used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and as a popular stone for meditation and crystal collecting.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of goldstone glass which this mineral resembles.

Field identification & locations

Identify by its characteristic green color and shimmering internal mica flakes. Often found in riverbeds or mountain outcroppings in India, Brazil, and Russia.