mineral

Green aventurine quartz (probable)

Quartz, SiO₂, with fuchsite or other green mica inclusions

AI-generated identification · may be incorrect

Typically translucent green-gray with a vitreous to slightly dull luster and granular texture; Mohs hardness 7, no cleavage, conchoidal fracture, and specific gravity about 2.65. The specimen appears naturally weathered or roughly polished, with sparkling mica-like inclusions and possible internal fractures.

Identified August 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms in silica-rich igneous or metamorphic rocks when quartz crystallizes around green fuchsite mica or related minerals, commonly during hydrothermal or metamorphic processes. Its exact geological age cannot be determined from the photograph.

Uses & applications

Used for cabochons, beads, carvings, ornamental stone, and inexpensive lapidary specimens; massive material is also used decoratively. It is generally a common collector stone rather than a high-value gemstone.

Geological facts

The green color is usually caused by chromium-bearing fuchsite mica, not by the quartz itself. It can resemble green jade, but aventurine is harder and commonly shows glittering aventurescence.

Field identification & locations

Check for quartz hardness, glassy fracture, and mica glitter; it should scratch ordinary glass but not be scratched by a steel knife. Common sources include India, Brazil, Russia, Tanzania, and Zimbabwe.