mineral
Rough blue-green beryl, likely aquamarine
Beryl (Be₃Al₂Si₆O₁₈), possibly aquamarine variety
AI-generated identification · may be incorrectPale blue-green to nearly colorless, translucent, vitreous luster; beryl crystallizes in the hexagonal system and has Mohs hardness 7.5–8. The specimen appears rough and fractured; its color alone cannot confirm aquamarine.
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Physical properties
Pale blue-green to nearly colorless, translucent, vitreous luster; beryl crystallizes in the hexagonal system and has Mohs hardness 7.5–8. The specimen appears rough and fractured; its color alone cannot confirm aquamarine.
Formation & geological history
Beryl forms in pegmatites and some metamorphic rocks as magma-rich fluids crystallize. Such deposits span a wide range of geological ages.
Uses & applications
Gem-quality aquamarine is cut for jewelry; lower-grade beryl is collected as a mineral specimen. Beryl is also an important source of beryllium.
Geological facts
Aquamarine is the blue to blue-green variety of beryl; other beryl varieties include emerald and morganite.
Field identification & locations
Look for glassy luster, hardness, and hexagonal crystal form, though rough fragments may lack clear crystal faces. Aquamarine-bearing pegmatites occur in Brazil, Madagascar, Pakistan, and elsewhere; confirm identity with testing rather than appearance alone.
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