mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Hardness: 7.5-8.0; Color: Blue to blue-green; Luster: Vitreous; Crystal System: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.67-2.90.

Hardness: 7
Color: Blue to blue-green
Luster: Vitreous

Identified June 22, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0; Color: Blue to blue-green; Luster: Vitreous; Crystal System: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.67-2.90.

Formation & geological history

Formed in granitic pegmatites and hydrothermal veins. They crystallize during the final stages of magma cooling when incompatible elements like Beryllium are concentrated.

Uses & applications

Primarily used as a gemstone in high-end jewelry. Industrially, beryl is a source of beryllium metal, used in aerospace and electronics.

Geological facts

The name comes from the Latin 'aqua marina' meaning sea water. It was historically believed to protect sailors at sea. The 'Dom Pedro' is the largest cut aquamarine in existence.

Field identification & locations

Identified by its hexagonal crystal habit, hardness, and distinct blue color. Commonly found in Brazil, Pakistan, and Madagascar. Distinguishable from blue topaz by its higher clarity and lower specific gravity.

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