mineral

Tumbled green aventurine (likely)

Quartz (SiO₂) with fuchsite or other green mica inclusions

AI-generated identification · may be incorrect

Translucent pale green, vitreous-to-waxy luster, granular quartz texture, no obvious cleavage; hardness about 6.5–7 Mohs, specific gravity roughly 2.6–2.7. The rounded shape indicates human tumbling and polishing.

Identified September 12, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids or melts crystallize quartz containing disseminated green mica, commonly in metamorphic or hydrothermal settings. Precise geological age depends on locality; common material comes from India, Brazil, Russia, and Zimbabwe.

Uses & applications

Used for beads, cabochons, carvings, ornamental stone, and inexpensive collectors’ specimens. It is not typically used as a major construction stone.

Geological facts

The green color and subtle glitter, called aventurescence, usually come from fuchsite mica; chromium-bearing fuchsite can produce vivid green hues. The photograph cannot confirm whether this is aventurine quartz versus a similar green stone such as prehnite or dyed material.

Field identification & locations

Identify by its quartz-like hardness, translucent green body, and possible sparkly mica flashes; it should scratch ordinary glass but not quartz. A gemological test for refractive index or microscopy is needed for certainty.