mineral

Tumbled green aventurine (probable)

Quartz, SiO₂, with dispersed fuchsite or other green inclusions

AI-generated identification · may be incorrect

Smooth, rounded, translucent-to-opaque green pebble with a vitreous luster; quartz hardness is about Mohs 7, with no obvious cleavage and specific gravity near 2.65. The image is insufficient to confirm the characteristic aventurescent sparkle, so green chalcedony or dyed material remains possible.

Identified September 1, 2026More mineral →

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Physical properties

Formation & geological history

Aventurine forms when quartz crystallizes with reflective inclusions, commonly fuchsite mica, in metamorphic or hydrothermal settings; the geological age depends on its source locality. This specimen has been cut and polished into a cabochon-like tumble.

Uses & applications

Used for beads, carvings, ornamental objects, and inexpensive cabochons; it is also sold as a lapidary and metaphysical stone. Common polished pieces have modest commercial value.

Geological facts

Green aventurine is commonly confused with jade, amazonite, and glass. Fuchsite flakes may produce a glittering effect when the stone is rotated under direct light.

Field identification & locations

Common sources include India, Brazil, Russia, and Tanzania. Check for natural granular texture, quartz-like hardness, and sparkle; glass often shows bubbles, while dye may concentrate in cracks. Acid and scratch tests should be avoided on a finished piece.