mineral
Green aventurine (rough quartz)
Quartz, SiO₂, with green fuchsite mica inclusions
AI-generated identification · may be incorrectPale green, translucent to opaque piece with a vitreous-to-dull luster and irregular fracture; quartz hardness 7 Mohs, trigonal crystal structure, no cleavage. The reddish patch may be an iron-oxide inclusion or surface stain.
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Physical properties
Pale green, translucent to opaque piece with a vitreous-to-dull luster and irregular fracture; quartz hardness 7 Mohs, trigonal crystal structure, no cleavage. The reddish patch may be an iron-oxide inclusion or surface stain.
Formation & geological history
A quartz-rich geological specimen, likely formed as quartz crystallized in silica-rich veins or cavities; its exact age and locality cannot be determined from the image.
Uses & applications
Aventurine is used for beads, carvings, cabochons, and decorative objects; rough pieces are mainly collected or used in lapidary work.
Geological facts
Aventurine’s characteristic sparkle, called aventurescence, comes from reflective mineral inclusions; it is not clearly visible in this specimen.
Field identification & locations
Green color and quartz-like fracture are consistent with aventurine, though the image alone cannot confirm the inclusions. Common sources include India, Brazil, and Russia.
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