mineral

Green aventurine (tumbled stone)

Quartz with fuchsite inclusions; SiO₂

AI-generated identification · may be incorrect

Opaque to translucent dark-green, polished oval with a vitreous luster and subtle sparkle. Quartz hardness is 7 Mohs; trigonal crystal structure, no cleavage, and specific gravity about 2.65. The image alone cannot confirm the material; dyed quartz or glass imitations are possible.

Identified October 11, 2026More mineral →

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Physical properties

Formation & geological history

A quartz variety colored by tiny green fuchsite mica inclusions, formed in silica-rich veins or metamorphic rocks. Its age depends on the source deposit.

Uses & applications

Used for beads, cabochons, carvings, ornaments, and inexpensive jewelry; also collected as a decorative stone.

Geological facts

Aventurine’s characteristic glitter, called aventurescence, comes from reflective mineral inclusions; the effect is usually subtler in green material.

Field identification & locations

Look for a consistent green body color with fine reflective flecks and quartz-like hardness; common sources include India, Brazil, and Russia. A glass imitation may show bubbles or be less hard.