mineral
Pale green rough crystal, possibly aquamarine (beryl)
Beryl, Be₃Al₂Si₆O₁₈ (tentative visual identification)
AI-generated identification · may be incorrectA translucent-to-opaque, pale blue-green rough specimen with a vitreous-to-dull luster; beryl has hexagonal crystals and Mohs hardness 7.5–8. The image does not show enough detail to confirm its identity or measure its properties.
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Physical properties
A translucent-to-opaque, pale blue-green rough specimen with a vitreous-to-dull luster; beryl has hexagonal crystals and Mohs hardness 7.5–8. The image does not show enough detail to confirm its identity or measure its properties.
Formation & geological history
If beryl, it commonly forms in granitic pegmatites and some metamorphic rocks as silica-rich fluids crystallize; deposits span many geological ages.
Uses & applications
Gem-quality aquamarine is cut for jewelry; lower-grade beryl may be collected or used as a mineral specimen.
Geological facts
Aquamarine is the blue-to-green variety of beryl; color alone is not sufficient to distinguish it from other pale minerals.
Field identification & locations
Look for a hexagonal prism habit, hardness, and diagnostic tests; a gemologist or mineral testing is needed for confirmation. Beryl occurs in pegmatites worldwide, including Brazil, Madagascar, and Pakistan.
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