mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Hardness: 7.5–8.0 on Mohs scale; Color: Pale blue to greenish-blue; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.6 – 2.9

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

Identified March 7, 2026More mineral →

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Physical properties

Hardness: 7.5–8.0 on Mohs scale; Color: Pale blue to greenish-blue; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.6 – 2.9

Formation & geological history

Formed primarily in pegmatites (coarse-grained igneous rocks) through hydrothermal activity. Found in granite-based environments and metamorphic rocks like schists during the cooling of magma rich in beryllium.

Uses & applications

Predominantly used as a gemstone in high-end jewelry (rings, necklaces). Also valued by mineral collectors for its crystal aesthetic and used as a source of beryllium for industrial alloys.

Geological facts

Aquamarine is the birthstone for March. Its name is derived from the Latin 'aqua marina', meaning 'seawater'. Historically, sailors believed the crystal would protect them at sea and prevent seasickness.

Field identification & locations

Identify by its hexagonal profile and distinctive blue-green tint. Commonly found in Brazil, Pakistan, and Madagascar. Collectors should look for clarity and depth of color; raw, opaque specimens like the one pictured are common in mine tailings.

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