mineral

Green aventurine (rough quartz)

Quartz, SiO₂, likely green fuchsite-bearing aventurine

AI-generated identification · may be incorrect

Pale green, translucent to opaque, vitreous luster; quartz is Mohs 7, trigonal crystal structure, and lacks cleavage. The small rough fragment’s identity cannot be confirmed from the photo alone.

Identified October 6, 2026More mineral →

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Physical properties

Pale green, translucent to opaque, vitreous luster; quartz is Mohs 7, trigonal crystal structure, and lacks cleavage. The small rough fragment’s identity cannot be confirmed from the photo alone.

Formation & geological history

Quartz crystallizes from silica-rich fluids in veins and pegmatites; green color commonly comes from microscopic fuchsite inclusions. Such deposits occur in many geological ages.

Uses & applications

Used for beads, carvings, ornamental objects, and inexpensive jewelry; quartz is also important in glass and electronics.

Geological facts

Aventurine’s characteristic sparkle (aventurescence) comes from reflective mineral inclusions; this fragment appears too small to assess that effect.

Field identification & locations

Look for hardness near 7, glassy luster, and no obvious cleavage; green aventurine is notably found in India, Brazil, and Russia. A photo cannot establish its composition or locality.