mineral
Tumbled green aventurine
Quartz (SiO₂), commonly colored green by inclusions of fuchsite mica
AI-generated identification · may be incorrectSmall polished, translucent green pebble with a vitreous luster; quartz has Mohs hardness 7, trigonal crystal structure, and no true cleavage. The image alone cannot confirm the green inclusions or precise variety.
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Physical properties
Small polished, translucent green pebble with a vitreous luster; quartz has Mohs hardness 7, trigonal crystal structure, and no true cleavage. The image alone cannot confirm the green inclusions or precise variety.
Formation & geological history
Aventurine forms when quartz crystallizes with reflective mineral inclusions, typically in silica-rich veins or metamorphic rocks; its age depends on the deposit.
Uses & applications
Used for beads, cabochons, carvings, and inexpensive decorative or collecting specimens.
Geological facts
The sparkle sometimes seen in aventurine is called aventurescence and comes from platy inclusions; it is not clearly visible here.
Field identification & locations
The rounded, polished shape suggests a tumbled stone. Green color alone is not diagnostic; hardness, inclusions, and gemological testing help distinguish aventurine from dyed quartz or other green minerals.
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Epidote
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Granite
Granite (Phaneritic intrusive igneous rock)
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