mineral

Aquamarine

Beryl (Be3Al2Si6O18 with Fe2+ impurities)

Hardness: 7.5–8.0 (Mohs scale); Color: Pale blue to light green; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Imperfect; Specific Gravity: 2.6 – 2.9

Hardness: 7
Color: Pale blue to light green
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 light green; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Imperfect; Specific Gravity: 2.6 – 2.9

Formation & geological history

Formed in granitic pegmatites and metamorphic rocks (schists) through hydrothermal activity. Geological ages vary widely depending on the deposit, ranging from hundreds of millions to billions of years old.

Uses & applications

Primary use as a gemstone in the jewelry industry; also highly valued by mineral collectors as rough specimens.

Geological facts

Aquamarine is the birthstone for March. Its name is derived from the Latin 'aqua marina', meaning 'water of the sea'. Unlike its cousin the Emerald, Aquamarine often grows in very large, eye-clean crystals.

Field identification & locations

Identify in the field by its distinct hexagonal crystal habit, light blue/cyan color, and high hardness (it will scratch quartz). Commonly found in Brazil, Pakistan, Nigeria, and Madagascar. Collectors should look for clarity and saturation of color.

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