mineral
Tumbled green aventurine
Quartz (SiO₂) with green fuchsite mica inclusions; aventurine is a variety of quartzite
AI-generated identification · may be incorrectTypically Mohs 6.5–7; green, translucent to opaque, with a vitreous luster and granular quartz texture. The image shows a smooth, polished green specimen; its exact identity cannot be confirmed visually.
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Physical properties
Typically Mohs 6.5–7; green, translucent to opaque, with a vitreous luster and granular quartz texture. The image shows a smooth, polished green specimen; its exact identity cannot be confirmed visually.
Formation & geological history
Forms when quartz-rich material recrystallizes or consolidates with reflective mica inclusions; quartz deposits occur across many geological ages and settings.
Uses & applications
Commonly tumbled for jewelry, beads, ornaments, and collectors; also used decoratively.
Geological facts
Aventurine’s subtle sparkle, called aventurescence, comes from platy mineral inclusions, commonly mica.
Field identification & locations
Often identified by its green color and occasional glitter, but similar stones such as jade, serpentine, and dyed quartz can look alike. Found in deposits including India, Brazil, and Russia.
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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
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous