RockVault
Beryl

Image: <bdi><a href="https://www.wikidata.org/wiki/Q108103612" class="extiw" title="d:Q108103612"><span title="Wikipedian and OpenStreetMap mapper from Cologne, Open Data activist">Raimond Spekking</span></a></bdi> (CC BY-SA 4.0)

hexagonaluncommonSilicates

Beryl

Be3Al2Si6O18

The image displays a well-formed, pale greenish-blue hexagonal prismatic crystal of Beryl, exhibiting good transparency and vitreous luster.

Beryl Physical Properties

Mohs Hardness

7.5

Crystal System

hexagonal

Luster

vitreous

Streak Color

white

Cleavage

imperfect basal

Fracture

conchoidal

Specific Gravity

2.7

Colors

green, blue, pink, yellow, colorless, red, pale green, pale blue

Transparency

transparent

Type Locality

Brazil

Mineral Group

Silicates

Uses

jewelry, industrial, collector

Associated Minerals

quartz, feldspar, mica, topaz, tourmaline

Rarity

uncommon

Geological Context

Beryl commonly forms in granitic pegmatites, but can also be found in mica schists, hydrothermal veins, and metamorphic rocks, requiring beryllium-rich fluids for its crystallization.