mineral

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

AI-generated identification · may be incorrect

Hardness: 7.5–8.0 Mohs; Color: Pale blue to light green; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.63–2.80

Hardness: 7
Color: Pale blue to light green
Luster: Vitreous

Identified July 12, 2026More mineral →

Explore Aquamarine in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Hardness: 7.5–8.0 Mohs; Color: Pale blue to light green; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.63–2.80

Formation & geological history

Forms in granitic pegmatites and hydrothermal veins. They crystallized from cooling magma as rare elements like Beryllium concentrated in fluid-rich pockets.

Uses & applications

Primarily used as a gemstone for jewelry (rings, necklaces, earrings) and as a highly sought-after specimen for mineral collectors.

Geological facts

The name comes from Latin 'aqua marina' meaning 'water of the sea'. It is the birthstone for March and is famous for its association with sailors, who carried it for protection at sea.

Field identification & locations

Identify by its characteristic pale blue color and hexagonal crystal habit. Common locations include Brazil, Pakistan, Nigeria, and Madagascar. Look for clarity and intensity of blue to determine quality.