mineral

Tumbled green aventurine

Aventurine quartz, SiO₂, colored green by inclusions commonly of fuchsite mica

AI-generated identification · may be incorrect

Likely Mohs hardness 6.5–7; opaque to slightly translucent, blue-green to gray-green, with a vitreous luster and fine-grained quartz structure. The smooth rounded shape and polish indicate tumbling; cleavage is absent and fracture is conchoidal.

Identified September 30, 2026More mineral →

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Physical properties

Formation & geological history

A quartz-rich rock formed when silica crystallized, with green mica inclusions producing its color; its exact geological age and source cannot be determined from the image. Green aventurine is commonly sourced from India, Brazil, and parts of Africa.

Uses & applications

Used for beads, carvings, jewelry, and decorative stones; this small tumbled specimen is primarily a collectible or ornamental piece.

Geological facts

Aventurine’s subtle glitter, called aventurescence, comes from reflective mineral inclusions; it may be faint or absent in this specimen.

Field identification & locations

A polished green quartz pebble with a fairly uniform color is consistent with aventurine, though visual identification alone is not definitive. Check for hardness near 7 and possible mica sparkle; common deposits occur in India and Brazil.