mineral

Green aventurine (likely)

Quartz variety; silicon dioxide (SiO₂) with green fuchsite mica inclusions

AI-generated identification · may be incorrect

Typically Mohs hardness 6.5–7, translucent to opaque, green color, vitreous to waxy luster, and no prominent cleavage; the rounded shape appears polished or tumbled. The image is not diagnostic, and dyed chalcedony or jade-like material is also possible.

Identified August 7, 2026More mineral →

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Physical properties

Formation & geological history

Forms in silica-rich hydrothermal or metamorphic environments when quartz grows with chromium-bearing fuchsite or other green inclusions. Its exact geological age cannot be determined visually; important deposits occur in India, Brazil, Russia, and Tanzania.

Uses & applications

Used for beads, carvings, cabochons, ornamental objects, and inexpensive jewelry; polished pieces are popular as decorative and metaphysical stones.

Geological facts

Aventurine’s characteristic glitter, called aventurescence, comes from reflective mica inclusions, though this specimen appears relatively low-glitter. It is commonly confused with jade, chrysoprase, and dyed green quartz.

Field identification & locations

Check for subtle mica sparkle, hardness greater than ordinary glass, and a quartz-like feel; jade requires specialized tests. Common tumbled specimens are widely sold from India and Brazil.