mineral

Polished green aventurine (likely)

Quartzite dominated by quartz (SiO₂), commonly containing fuchsite mica

AI-generated identification · may be incorrect

Vivid green, translucent-to-opaque, and glassy to waxy with a polished surface; typical hardness is 6.5–7 Mohs, with no obvious cleavage and a granular quartz crystal structure. The bright, fine reflective flecks characteristic of aventurine are difficult to confirm because the image is blurred.

Identified August 9, 2026More mineral →

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Physical properties

Formation & geological history

Forms when quartz-rich rock recrystallizes and incorporates chromium-bearing fuchsite or other green inclusions; most material is Paleozoic or younger metamorphic quartzite. Common sources include India, Brazil, Russia, and Tanzania.

Uses & applications

Used for beads, cabochons, carvings, ornaments, and polished stone; occasionally used as decorative facing or aggregate. It is generally an inexpensive gemstone material.

Geological facts

The green color usually comes from fuchsite mica, though chromium-bearing minerals can contribute. It should not be confused with green glass, jade, or emerald.

Field identification & locations

Identify it by its quartz-like hardness, granular texture, cool feel, and subtle glitter when rotated under light; glass may show bubbles and scratches more easily. Commonly sold tumbled or polished.