mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Hardness: 7.5-8.0; Color: Pale blue to greenish-blue; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.67-2.74

Hardness: 7
Color: Pale blue to greenish-blue
Luster: Vitreous (glassy)

Identified April 21, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0; Color: Pale blue to greenish-blue; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.67-2.74

Formation & geological history

Formed in granitic pegmatites and hydrothermal veins, typically during the late stages of magmatic crystallization. Occurs in metamorphic rocks like schists and in alluvial deposits.

Uses & applications

Primary use as a gemstone in high-end jewelry. Also used as a minor source of beryllium for industrial alloys, though other beryl varieties are more commonly used for ore extraction.

Geological facts

Aquamarine is the birthstone for March. Its name is derived from the Latin 'aqua marina', meaning 'sea water'. Historically, it was believed to protect sailors and ensure safe travel across stormy seas.

Field identification & locations

Identify by its characteristic sea-blue hue, high hardness (will scratch glass), and hexagonal crystal habits. Commonly found in Brazil, Pakistan, Nigeria, and Madagascar.