mineral
Green beryl, possibly emerald
Beryl (Be₃Al₂Si₆O₁₈), green variety; emerald if chromium/vanadium-colored
AI-generated identification · may be incorrectSeveral rough, translucent green fragments with vitreous luster and apparent cleavage/fracture. Beryl has hexagonal crystals, Mohs hardness 7.5–8, and specific gravity about 2.63–2.80; the image alone cannot confirm emerald quality or identity.
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Physical properties
Several rough, translucent green fragments with vitreous luster and apparent cleavage/fracture. Beryl has hexagonal crystals, Mohs hardness 7.5–8, and specific gravity about 2.63–2.80; the image alone cannot confirm emerald quality or identity.
Formation & geological history
Forms mainly in hydrothermal pegmatites and metamorphic rocks, where beryllium-bearing fluids interact with chromium- or vanadium-bearing rocks. Beryl crystallized in Precambrian settings, commonly hundreds of millions to over 2 billion years old.
Uses & applications
Gem-quality emerald is cut for jewelry; ordinary green beryl is collected or used as a mineral specimen. These pieces appear low-grade and not suitable for valuable faceting.
Geological facts
Emerald is defined by its green color and beryl chemistry, not simply by appearance. Similar-looking material includes green fluorite, aventurine, glass, and serpentine.
Field identification & locations
The angular fragments and green translucent appearance fit beryl, but identification requires hardness, refractive index, and ideally chemical testing. Around 11.2°S, 24.2°E in Zambia, emerald-bearing metamorphic belts are regionally plausible, though these could also be common green beryl or another green mineral.
