mineral

Small green mineral specimen, possibly aventurine or serpentine

Uncertain; likely quartz-bearing aventurine (SiO₂) or serpentine-group mineral

AI-generated identification · may be incorrect

Tiny green, rough granular fragment with dull to slightly sparkly luster; likely Mohs hardness 2.5–7 depending on identity, with no visible cleavage or crystal form. Color and texture alone are insufficient for reliable identification from the photograph.

Identified August 30, 2026More mineral →

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Physical properties

Formation & geological history

Could form in hydrothermal veins or metamorphic rocks; serpentine develops by hydration of ultramafic rock, while green aventurine forms when quartz crystallizes with fuchsite or other green inclusions. Geological age depends on its source locality.

Uses & applications

If aventurine, used as ornamental stone, carvings, beads, and inexpensive jewelry; serpentine is used decoratively and sometimes as a jade substitute. This fragment has negligible commercial value.

Geological facts

Aventurine’s glitter comes from included mica, whereas serpentine is typically waxy and softer. A streak, hardness, specific-gravity, and microscope test would be needed for confident identification.

Field identification & locations

Common possibilities occur in India, Brazil, Russia, South Africa, and the United States. Test cautiously: quartz-rich material scratches glass, while serpentine generally does not; avoid acid or destructive testing without confirmation.