mineral

Aquamarine

Beryl (Be3Al2Si6O18 with Fe impurities)

AI-generated identification · may be incorrect

Hardness: 7.5-8 on Mohs scale; Color: Pale blue to light sea-green; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Specific Gravity: 2.66-2.80.

Hardness: 7
Color: Pale blue to light sea-green
Luster: Vitreous (glassy)

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 on Mohs scale; Color: Pale blue to light sea-green; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Specific Gravity: 2.66-2.80.

Formation & geological history

Forms primarily in granitic pegmatites and metamorphic rocks (schist) through hydrothermal activity during late-stage igneous cooling.

Uses & applications

Primarily used as a gemstone in jewelry; also a collector's mineral and a minor source of beryllium for industrial alloys.

Geological facts

The name is derived from the Latin 'aqua marina', meaning 'seawater'. In ancient times, sailors believed it would protect them against storms at sea.

Field identification & locations

Identified by its distinctive pale blue color, high hardness, and hexagonal crystalline habit. Common locations include Brazil, Pakistan, and Nigeria.