mineral

Green aventurine (likely)

Quartzite composed mainly of quartz (SiO₂), colored by included fuchsite mica or similar chromium-bearing minerals

AI-generated identification · may be incorrect

Polished/tumbled, pale to medium green, translucent at edges, with a vitreous-to-waxy luster and no visible cleavage. Quartz hardness is about Mohs 7; specific gravity is approximately 2.6–2.7. The image does not show diagnostic sparkle, so green chalcedony or dyed stone remain alternatives.

Identified September 17, 2026More mineral →

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Physical properties

Formation & geological history

Forms when quartz-rich sandstone is metamorphosed and recrystallized; green color commonly comes from fuchsite inclusions. Such material is widespread in Precambrian metamorphic terrains, including southern India, though this particular specimen’s origin cannot be confirmed visually.

Uses & applications

Used for beads, cabochons, carvings, ornamental objects, and inexpensive lapidary material; generally modest collector value.

Geological facts

Aventurine’s characteristic aventurescence is caused by reflective mineral platelets. The pictured smooth oval appears tumbled and polished rather than naturally weathered.

Field identification & locations

Test cautiously: genuine quartzite should not be scratched by a steel knife, but it can scratch glass; inspect with a loupe for mica glitter and granular quartz texture. Green stones near 13.5°N, 77.5°E may also be locally sourced quartz/chalcedony or serpentinite-related material.