Beryl

Chemical formula (IMA record)

Be₃Al₂(Si₆O₁₈)

Recognition status

Grandfathered

Original-description year in master list

Unknown in the master list

First-discovery country (IMA)

unknown

Crystal system

Hexagonal

Mohs hardness

7.5–8

Measured density

2.63–2.97 g/cm³ (measured range)

Historical discoverer

Not supplied in the IMA master list

How it occurs in nature

Beryl occurs in granitic rocks and pegmatites, and can also crystallize in hydrothermal veins and some metamorphic settings. Different geological environments produce different associations and compositions.

Related gem names

Discovery & scientific record

The country refers to the master list’s first-discovery country, using modern borders. It is not a list of all deposits. A question mark is retained when the source is uncertain; a special-procedure date can refer to redefinition rather than discovery.

Catalog coverage and profile depth are different: every species in the cited IMA edition is indexed, but this edition does not provide every physical property or a full discovery narrative. The archive leaves those gaps explicit. Formulae and references are adapted from the IMA list under CC BY-SA 3.0; consult the original page for authoritative typography.