mineral

Green aventurine quartz (likely)

Quartz, SiO₂, colored by included fuchsite mica or other chromium-bearing minerals

AI-generated identification · may be incorrect

Typically translucent to opaque green with a vitreous luster and granular texture; Mohs hardness 7, no cleavage, conchoidal fracture, and specific gravity about 2.65. The small piece appears tumbled or naturally water-worn, though its identity cannot be confirmed from the image alone.

Identified September 9, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize quartz with green mica inclusions, commonly in metamorphic or hydrothermal environments; individual deposits range from Precambrian to younger geologic ages. Common sources include India, Brazil, Russia, and Tanzania.

Uses & applications

Used for beads, cabochons, carvings, decorative stone, and inexpensive collector specimens; large masses are sometimes used as ornamental material.

Geological facts

Its green color and subtle sparkly aventurescence distinguish it from ordinary green glass or jade, but the image shows little visible sparkle. A scratch test, magnification, and specific-gravity measurement would improve identification.

Field identification & locations

Field clues include hardness sufficient to scratch ordinary glass, quartz-like fracture, and mica glitter; jade is tougher and usually more compact. Common value is low unless color, translucency, and aventurescence are exceptional.