mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

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

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

Identified March 13, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed in pegmatites, which are igneous rock formations characterized by large crystals, often during the late stages of magma cooling. Found in various geological ages depending on the deposit location, often millions of years old.

Uses & applications

Primarily used in jewelry as a gemstone (faceted or cabochon), and highly sought after by mineral collectors for natural crystal specimens.

Geological facts

The name 'Aquamarine' comes from the Latin 'aqua marina', meaning 'water of the sea'. Historically, sailors believed it would protect them from sirens and prevent seasickness.

Field identification & locations

Identify by its distinct hexagonal crystal shape (if raw), high hardness, and pale blue color. Commonly found in Brazil, Madagascar, Nigeria, and Pakistan. Collectors look for clarity and depth of color.

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