mineral

Beryl (Aquamarine variety)

Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)

Hardness: 7.5-8.0 on Mohs scale; Color: Pale blue to greenish-blue; Luster: Vitreous; Crystal Structure: Hexagonal; Specific Gravity: 2.66-2.80; Cleavage: Imperfect basal.

Hardness: 7
Color: Pale blue to greenish-blue
Luster: Vitreous

Identified June 17, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0 on Mohs scale; Color: Pale blue to greenish-blue; Luster: Vitreous; Crystal Structure: Hexagonal; Specific Gravity: 2.66-2.80; Cleavage: Imperfect basal.

Formation & geological history

Typically forms in granitic pegmatites or hydrothermal veins when beryllium-rich fluids interact with magma cooling deep within the Earth's crust.

Uses & applications

Primarily used as a gemstone in jewelry; beryllium is also extracted for high-tech industrial alloys and aerospace components.

Geological facts

The color of aquamarine is caused by trace amounts of iron. Pure beryl is actually colorless (Goshenite). It was Historically used to make eyeglasses as early as the 13th century.

Field identification & locations

Identified by its hexagonal crystal habit, hardness, and distinct blue-green hue. Found in countries like Brazil, Madagascar, Nigeria, and Pakistan.

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Mineral/Rock

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Metamorphic Rock

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mineral