Rock Identifier
Tumbled aquamarine (likely) (Aquamarine, blue-green variety of beryl (Be₃Al₂Si₆O₁₈)) — gemstone
gemstone

Tumbled aquamarine (likely)

Aquamarine, blue-green variety of beryl (Be₃Al₂Si₆O₁₈)

AI-generated identification · may be incorrect

Pale blue-green, translucent, with a vitreous luster; beryl has hexagonal crystals and Mohs hardness 7.5–8. The pictured piece is rounded and polished, so natural crystal faces and cleavage are not visible.

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Physical properties

Pale blue-green, translucent, with a vitreous luster; beryl has hexagonal crystals and Mohs hardness 7.5–8. The pictured piece is rounded and polished, so natural crystal faces and cleavage are not visible.

Formation & geological history

Beryl forms in granitic pegmatites and some metamorphic rocks as magma cools and mineral-rich fluids crystallize. Beryl deposits span a wide range of geological ages; age and locality cannot be determined from the image.

Uses & applications

Aquamarine is cut for jewelry and used as a collector gemstone; this tumbled piece is primarily decorative.

Geological facts

Aquamarine’s color is generally associated with trace iron in beryl. Its name derives from Latin for “seawater.”

Field identification & locations

The blue-green color and translucency fit aquamarine, but the image alone cannot confirm identity; glass or other tumbled minerals can look similar. Common sources include Brazil, Pakistan, Madagascar, and Nigeria.