mineral

Green Aventurine (Double-Terminated Wand)

Silicon Dioxide (SiO2) containing Fuchsite (Chromium-rich Muscovite Mica)

Hardness: 7 on Mohs scale; Color: Forest green to translucent green; Luster: Vitreous to waxy with 'aventurescence' (metallic glitters); Crystal Structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.64-2.69

Hardness: 7 on Mohs scale
Color: Forest green to translucent green
Luster: Vitreous to waxy with 'aventurescence' (metallic glitters)

Identified March 16, 2026More mineral →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

Formed through the metamorphic process where magma cools within the earth's crust, or in magmatic deposits. Its green color is primarily due to inclusions of chromium-rich fuchsite mica. It is found in deposits dating back millions of years.

Uses & applications

Primary use is in lapidary work for jewelry, cabochons, and tumbled stones. Frequently used in 'crystal healing' practices and home decor due to its pleasing color. In industry, it is sometimes used for ornamental carvings.

Geological facts

The name 'Aventurine' is derived from the Italian 'a ventura,' meaning 'by chance.' This refers to the accidental discovery of aventurine glass (goldstone) in the 18th century, which the natural mineral closely resembles.

Field identification & locations

Identify in the field by its green color and the presence of shimmering mica inclusions (aventurescence). It will scratch glass. Common locations include India (the largest producer), Brazil, Russia, and Austria. Tips for collectors: Check for uniform color and the quality of the 'sparkle' inside the stone.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

mineral