mineral

Green aventurine (likely)

Quartz, SiO₂, with fuchsite or other green inclusions

AI-generated identification · may be incorrect

Small rounded, tumbled specimen with translucent to opaque green color and vitreous-to-waxy luster; Mohs hardness 6.5–7, trigonal crystal structure, no cleavage, specific gravity about 2.6–2.7. The image may also represent green glass or dyed quartz, so identification is provisional.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Forms when quartz crystallizes with chromium-bearing fuchsite mica or other inclusions, commonly in metamorphic rocks; deposits are generally Precambrian to younger. Tumbled surfaces obscure natural texture and crystals.

Uses & applications

Used for beads, carvings, cabochons, ornamental stone, and inexpensive gemstone specimens; also sold as a decorative and metaphysical material.

Geological facts

Aventurine’s characteristic sparkle, called aventurescence, comes from reflective mineral inclusions; it is distinct from jade, which is tougher and generally has a different texture.

Field identification & locations

Common sources include India, Brazil, Russia, Tanzania, and China. Check for subtle glitter, quartz-like translucency, hardness sufficient to scratch ordinary glass, and absence of bubbles; bubbles or perfectly uniform color suggest glass.