mineral
Green aventurine
Aventurine quartz (SiO₂) with green fuchsite mica inclusions
AI-generated identification · may be incorrectTumbled, opaque to translucent green stone with a vitreous sheen and subtle glitter; Mohs hardness 6.5–7, trigonal quartz crystal structure, no prominent cleavage. The pictured specimen appears consistent with aventurine, though image identification is not definitive.
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Physical properties
Tumbled, opaque to translucent green stone with a vitreous sheen and subtle glitter; Mohs hardness 6.5–7, trigonal quartz crystal structure, no prominent cleavage. The pictured specimen appears consistent with aventurine, though image identification is not definitive.
Formation & geological history
Forms when silica-rich fluids crystallize as quartz containing fine mica inclusions; the material is commonly associated with metamorphic rocks. Its geological age varies by deposit.
Uses & applications
Used for beads, cabochons, ornaments, and inexpensive jewelry; also collected as a decorative tumbled stone.
Geological facts
The faint glitter sometimes seen in aventurine is called aventurescence, produced by reflective mineral inclusions.
Field identification & locations
Often found in India, Brazil, and parts of Russia; identify by its green color, quartz-like hardness, and possible fine sparkle. A plain green appearance alone cannot distinguish it confidently from other stones.
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