Rock Identifier
Possibly a polished pale-green gemstone cabochon (likely aquamarine or fluorite) (Undetermined from the image; aquamarine is blue-green beryl (Be₃Al₂Si₆O₁₈), while fluorite is CaF₂) — gemstone
gemstone

Possibly a polished pale-green gemstone cabochon (likely aquamarine or fluorite)

Undetermined from the image; aquamarine is blue-green beryl (Be₃Al₂Si₆O₁₈), while fluorite is CaF₂

AI-generated identification · may be incorrect

Small, rounded, translucent pale-green stone with a smooth, domed surface; inclusions and reflections obscure identification. Aquamarine has Mohs hardness 7.5–8 and hexagonal crystals; fluorite has hardness 4 and cubic crystals.

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Physical properties

Small, rounded, translucent pale-green stone with a smooth, domed surface; inclusions and reflections obscure identification. Aquamarine has Mohs hardness 7.5–8 and hexagonal crystals; fluorite has hardness 4 and cubic crystals.

Formation & geological history

If aquamarine, it typically crystallized in granitic pegmatites; if fluorite, it commonly formed in hydrothermal veins. No age or origin can be determined from the photo.

Uses & applications

Cabochons are used in jewelry and collecting; aquamarine is also faceted, while fluorite is mainly ornamental.

Geological facts

The image does not show diagnostic features sufficient to distinguish natural gemstone from another polished material.

Field identification & locations

A hardness test, refractive index measurement, and examination for natural inclusions are needed; avoid destructive testing on a finished stone. Common sources depend on the mineral, including Brazil and Pakistan for aquamarine, and China, Mexico, and the United States for fluorite.