mineral

Green aventurine bead

Quartz (SiO₂), usually quartzite containing fuchsite mica

AI-generated identification · may be incorrect

Small polished, rounded green specimen with a vitreous-to-waxy luster; hardness about 6.5–7 Mohs, no obvious cleavage, trigonal quartz structure, and specific gravity near 2.6. The even green color and lack of visible sparkle make identification uncertain; it could also be serpentine or dyed glass.

Identified August 30, 2026More mineral →

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Physical properties

Formation & geological history

Natural aventurine forms when quartz crystallizes with chromium-bearing fuchsite mica, producing green coloration and aventurescence; quartzite host rocks are commonly Precambrian to Paleozoic. Polishing and shaping are human processing.

Uses & applications

Used for beads, carvings, cabochons, ornamental stone, and inexpensive jewelry; it has little industrial value in this small form.

Geological facts

Aventurine’s diagnostic glitter comes from reflective mica or hematite inclusions, though this bead shows minimal visible aventurescence. Green aventurine is commonly marketed as a luck or “heart chakra” stone, without scientific evidence for those claims.

Field identification & locations

Common sources include India, Brazil, Russia, and Tanzania. Check for subtle mica sparkle, quartz-like translucency, and scratch resistance; a glass bead may show bubbles, while serpentine is softer (about 2.5–5.5 Mohs).