mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

AI-generated identification · may be incorrect

Hardness: 7.5-8.0 on Mohs scale; Color: Pale blue to light green; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Imperfect; Specific Gravity: 2.66-2.80

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

Identified June 29, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0 on Mohs scale; Color: Pale blue to light green; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Imperfect; Specific Gravity: 2.66-2.80

Formation & geological history

Formed in granitic pegmatites and metamorphic rocks like schists. The color is caused by trace amounts of ferrous iron (Fe2+). Most deposits are from the Cenozoic era, though occurrences date back older.

Uses & applications

Primarily used as a gemstone in high-end jewelry (rings, necklaces, earrings). It is the birthstone for March.

Geological facts

The name comes from the Latin 'aqua marina', meaning 'water of the sea'. Historically, it was believed to protect sailors at sea and prevent seasickness.

Field identification & locations

Identify by its characteristic pale blue color, high hardness (will scratch glass), and hexagonal crystal habit if uncut. Common in Brazil, Pakistan, and Madagascar.