mineral

Small green tumbled stone, possibly green aventurine

Likely quartz with green mica or other inclusions (aventurine); identification is uncertain from the photo.

AI-generated identification · may be incorrect

Opaque to translucent olive-green, rounded and polished, with a vitreous sheen. If aventurine, hardness is about 6.5–7 Mohs and its crystal structure is trigonal quartz.

Identified September 30, 2026More mineral →

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Physical properties

Opaque to translucent olive-green, rounded and polished, with a vitreous sheen. If aventurine, hardness is about 6.5–7 Mohs and its crystal structure is trigonal quartz.

Formation & geological history

Aventurine forms when quartz crystallizes with reflective mineral inclusions, commonly fuchsite mica. Such quartz veins and metamorphic deposits can form across a wide range of geological ages.

Uses & applications

Small polished pieces are used in jewelry, beadwork, and decorative collections.

Geological facts

Green aventurine’s subtle glitter, called aventurescence, comes from light reflecting off tiny inclusions; it is not clearly discernible in this image.

Field identification & locations

The image shows a tiny polished green specimen, but color alone cannot distinguish aventurine from other green stones or glass. Check for natural inclusions and hardness; definitive identification may require testing.