gemstone
Aquamarine
Beryl (Be3Al2(SiO3)6)
Hardness: 7.5 to 8 on the Mohs scale; Color: pale blue, blue-green, greenish-blue; Luster: vitreous (glassy); Crystal structure: hexagonal; Cleavage: poor; Specific gravity: 2.67-2.83
- Hardness
- 7
- Color
- pale blue, blue-green, greenish-blue
- Luster
- vitreous (glassy)
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Physical properties
Hardness: 7.5 to 8 on the Mohs scale; Color: pale blue, blue-green, greenish-blue; Luster: vitreous (glassy); Crystal structure: hexagonal; Cleavage: poor; Specific gravity: 2.67-2.83
Formation & geological history
Forms primarily in pegmatites and in cavities within metamorphic rocks like schists and gneisses through hydrothermal processes.
Uses & applications
Used primarily as a popular gemstone in jewelry, rings, necklaces, and as a collector mineral specimen.
Geological facts
Aquamarine is the blue to green-blue variety of beryl. Its name comes from the Latin words 'aqua' (water) and 'marina' (sea), referring to its seawater color.
Field identification & locations
Can be identified in the field by its distinct hexagonal crystal habit, high hardness (scratches glass), and pale blue-green coloration. Commonly found in Brazil, Pakistan, Madagascar, and the USA.
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