mineral
Aquamarine (Beryl)
Beryl (Be3Al2Si6O18 with Fe impurities)
Hardness: 7.5-8.0; Color: Pale blue to deep cyan; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: Imperfect/Poor; Specific Gravity: 2.66-2.80
- Hardness
- 7
- Color
- Pale blue to deep cyan
- Luster
- Vitreous
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Physical properties
Hardness: 7.5-8.0; Color: Pale blue to deep cyan; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: Imperfect/Poor; Specific Gravity: 2.66-2.80
Formation & geological history
Found primarily in granitic pegmatites and hydrothermal veins. They form as magma cools and leaves behind fluid-rich cavities where large crystals can grow over millions of years.
Uses & applications
Primarily used in fine jewelry as a gemstone and highly valued by mineral collectors for its crystal form.
Geological facts
The name 'Aquamarine' comes from the Latin 'aqua marina' meaning sea water. It is the birthstone for March and was historically believed by sailors to protect them at sea.
Field identification & locations
Identify by its characteristic hexagonal prism shape, lightness of color, and high hardness which prevents scratching. Major sources include Brazil, Pakistan, and Madagascar.
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