mineral
Beryl (Aquamarine variety)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
AI-generated identification · may be incorrectHardness: 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
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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.
