mineral

Green rough emerald (probable)

Beryl, Be₃Al₂Si₆O₁₈; green color typically from chromium and/or vanadium

AI-generated identification · may be incorrect

Dark green, vitreous and translucent in thinner areas, with irregular fractures and possible natural crystal faces. Beryl has hexagonal crystals, Mohs hardness 7.5–8, and specific gravity about 2.7; the photo alone cannot confirm identity or gem quality.

Identified October 7, 2026More mineral →

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Physical properties

Formation & geological history

Emerald forms when beryllium-bearing fluids or rocks interact with chromium- or vanadium-bearing rocks, in hydrothermal veins or metamorphic settings. Deposits range from Precambrian to much younger ages.

Uses & applications

Gem-quality material is cut for jewelry; opaque or fractured specimens are collected, and beryl is also an industrial source of beryllium.

Geological facts

Emerald is the green variety of beryl; color and visible inclusions are characteristic, though other minerals can resemble it.

Field identification & locations

Common sources include Colombia, Zambia, Brazil, and Afghanistan. Confirm with gemological testing; avoid scratch tests on a potentially valuable specimen.