mineral

Green aventurine crystal point

Quartz (silicon dioxide, SiO₂), likely aventurine variety colored by fuchsite mica

AI-generated identification · may be incorrect

Typically Mohs hardness 7, translucent to opaque, with a vitreous to slightly waxy luster and green color; hexagonal quartz crystal structure, but this piece is cut and polished rather than naturally terminated. The subdued color and lack of obvious glitter make a serpentine or green quartz imitation possible.

Identified September 2, 2026More mineral →

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Physical properties

Formation & geological history

Natural aventurine forms when quartz crystallizes in silica-rich veins with dispersed chromium-bearing fuchsite; formation commonly occurs in metamorphic or hydrothermal environments over millions of years. The pictured point is human-shaped and polished.

Uses & applications

Used for ornamental carvings, crystal points, cabochons, decorative objects, and inexpensive metaphysical collectibles; not generally used as a major construction stone.

Geological facts

Aventurine’s characteristic aventurescence is caused by light reflecting from inclusions, especially mica. Green “crystal” points sold commercially may also be dyed quartz, serpentine, or glass.

Field identification & locations

Check for natural mica sparkle, quartz-like hardness (scratches ordinary glass), cool stone feel, and absence of bubbles; a gemological test for refractive index or specific gravity confirms identity. Common sources include India, Brazil, Russia, and China.