mineral

Massive blue-green rough specimen, likely aquamarine (beryl)

Beryl, Be₃Al₂Si₆O₁₈ (tentative identification)

AI-generated identification · may be incorrect

Pale blue-green, vitreous to dull and irregularly fractured; beryl has Mohs hardness 7.5–8, hexagonal crystals, and poor basal cleavage. The photo does not show diagnostic crystal faces or tests, so identification is uncertain.

Identified September 24, 2026More mineral →

Explore Massive blue-green rough specimen, likely aquamarine (beryl) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Beryl crystallizes from silica-rich granitic pegmatites and hydrothermal veins as magma cools; specimens may be hundreds of millions to billions of years old, depending on their deposit.

Uses & applications

Gem-quality aquamarine is cut for jewelry; lower-grade beryl is collected, while beryl also serves as a source of beryllium.

Geological facts

Aquamarine is the blue-to-blue-green gem variety of beryl; its color is commonly linked to trace iron.

Field identification & locations

Compare with beryl’s hexagonal prismatic crystals and high hardness; the pictured massive form is not enough to confirm it, and could be another blue-gray mineral. Aquamarine-bearing pegmatites occur in Brazil, Madagascar, Pakistan, and elsewhere.