mineral
Green aventurine (likely)
Quartz, SiO₂, with green fuchsite mica inclusions
AI-generated identification · may be incorrectThe small, rough green fragment is consistent with massive quartz; quartz has Mohs hardness 7, a glassy luster, and no cleavage. The image does not show enough detail to confirm its identity or characteristic aventurescence.
Identified More mineral →
Explore Green aventurine (likely) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
The small, rough green fragment is consistent with massive quartz; quartz has Mohs hardness 7, a glassy luster, and no cleavage. The image does not show enough detail to confirm its identity or characteristic aventurescence.
Formation & geological history
Aventurine forms when quartz grows with reflective mica inclusions, commonly during metamorphic or hydrothermal processes. Its geological age depends on the deposit and cannot be determined from the image.
Uses & applications
Used for beads, carvings, ornamental objects, and inexpensive jewelry; rough fragments are commonly collected.
Geological facts
Green color usually comes from chromium-bearing fuchsite mica dispersed through quartz.
Field identification & locations
Aventurine is typically translucent to opaque green and may show sparkling reflections when turned in light. The pictured fragment appears opaque and lacks clearly visible sparkle, so testing or a closer view would be needed for identification.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral