mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Hardness: 7.5-8.0 (Mohs scale); Color: Light blue to greenish-blue; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: Imperfect/Basal; Specific Gravity: 2.66-2.80

Hardness: 7
Color: Light blue to greenish-blue
Luster: Vitreous

Identified April 21, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0 (Mohs scale); Color: Light blue to greenish-blue; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: Imperfect/Basal; Specific Gravity: 2.66-2.80

Formation & geological history

Formed in granitic pegmatites and metamorphic rocks (schists). It forms through hydrothermal activity when beryllium-rich fluids cool and crystallize over millions of years.

Uses & applications

Primarily used as a gemstone in jewelry (rings, necklaces, earrings). Transparent specimens are highly sought after by collectors, while lower quality beryl can be an ore of beryllium.

Geological facts

Aquamarine's name is derived from the Latin 'aqua marina' meaning 'water of the sea'. It is the birthstone for March and is traditionally used to symbolize youth, health, and hope.

Field identification & locations

Identify by its characteristic pale blue color and high clarity compared to other blue stones like Blue Topaz. To identify in the field, look for hexagonal prismatic crystals in pegmatite veins.