gemstone
Blue-green cut gemstone, possibly aquamarine
Unconfirmed; aquamarine is blue-green beryl, Be₃Al₂Si₆O₁₈
AI-generated identification · may be incorrectSmall, transparent, faceted blue-green stone with vitreous luster. If aquamarine, hardness is 7.5–8 Mohs and its crystal system is hexagonal; the image is insufficient to confirm identity or cleavage.
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Physical properties
Small, transparent, faceted blue-green stone with vitreous luster. If aquamarine, hardness is 7.5–8 Mohs and its crystal system is hexagonal; the image is insufficient to confirm identity or cleavage.
Formation & geological history
Aquamarine forms in pegmatites and related hydrothermal veins, typically in granitic settings. The specimen’s geological age and origin cannot be determined from the image.
Uses & applications
Cut stones are used in jewelry and as collector gems.
Geological facts
Aquamarine is the blue-to-green variety of beryl; similar-looking glass, topaz, tourmaline, and synthetic stones are common alternatives.
Field identification & locations
Gemological testing—especially refractive index, inclusions, and magnification—is needed for identification; aquamarine is found in countries including Brazil, Pakistan, and Madagascar.
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