Beryl

Real mineral · rare · Be₃Al₂Si₆O₁₈

A beryllium aluminium silicate that requires the rare combination of beryllium-rich fluids and aluminium-rich rocks to form. Pure beryl is colourless; trace elements produce aquamarine, emerald, heliodor, and morganite varieties.

Identity

Formula

Be₃Al₂Si₆O₁₈

Chemical class

silicate

Mineral group

Aquamarine, Emerald

Also known as

Aquamarine (blue), Heliodor (yellow), Morganite (pink), Goshenite (colorless)

Crystallography

Crystal system

hexagonal

Habits

prismatic, columnar, tabular

Fracture

conchoidal

Physical properties

Mohs hardness

7.5

Density

2.72 g/cm³

Luster

vitreous

Colors

blue, blue-green, yellow, pink, colorless, red

Streak

white

Transparency

transparent, translucent

Geology

Origins

igneous, hydrothermal

Host rocks

pegmatite, granite, schist

Associated minerals

Quartz, Tourmaline, feldspar, Mica

Geography

Brazil, Colombia, Madagascar, Pakistan, Russia

Classification

Rarity

rare

Gem quality

Yes

Arcane properties

Affinity

water, air

Effects

scrying, mind

Planar origin

Material Plane

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