mineral

Beryl crystal in a dark mica-rich matrix

Beryl, Be₃Al₂Si₆O₁₈; likely associated with biotite or schist

AI-generated identification · may be incorrect

The pale yellow-green, prismatic crystal has a glassy luster and appears to show lengthwise striations; beryl has Mohs hardness 7.5–8, hexagonal crystal structure, and poor cleavage. The dark, flaky matrix is likely mica-rich, but its precise identity cannot be confirmed from the image.

Identified September 25, 2026More mineral →

Explore Beryl crystal in a dark mica-rich matrix 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 pegmatitic or hydrothermal fluids, sometimes within metamorphic rocks; its age depends on the deposit and cannot be determined from appearance alone.

Uses & applications

Beryl varieties include emerald and aquamarine gemstones; non-gem beryl is collected, and beryllium-bearing material has specialized industrial uses.

Geological facts

Beryl’s color depends on trace elements: chromium or vanadium can produce emerald, while iron commonly produces aquamarine or yellow tones.

Field identification & locations

Look for a six-sided prismatic crystal, longitudinal striations, and high hardness; the pictured crystal’s color and matrix alone are not enough to establish provenance or exact identification.