mineral

Green aventurine (likely)

Quartz, SiO₂, with fine green fuchsite or other mineral inclusions

AI-generated identification · may be incorrect

Opaque to translucent green, polished cabochon with a vitreous-to-waxy sheen; quartz hardness 7 Mohs, trigonal crystal structure, no cleavage. The image alone cannot confirm identity; similar green stones include jade and serpentine.

Identified October 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize quartz with dispersed inclusions, commonly in metamorphic rocks; its age depends on the deposit.

Uses & applications

Used for beads, cabochons, ornaments, and inexpensive jewelry; quartz is also widely used in glass and electronics.

Geological facts

Aventurine’s characteristic sparkle, called aventurescence, comes from reflective mineral inclusions; it is not clearly visible in this specimen.

Field identification & locations

Green color and polished, uniformly speckled appearance are consistent with aventurine, but identification needs tests such as hardness and specific gravity. Found in quartz-bearing deposits, notably in India, Brazil, and Russia.