mineral
Aquamarine
Beryllium Aluminum Silicate (Be3Al2Si6O18)
AI-generated identification · may be incorrectHardness: 7.5-8.0 on Mohs scale; Color: Pale blue to light green; Luster: Vitreous (glassy); Crystal structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.66-2.80
- Hardness
- 7
- Color
- Pale blue to light green
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7.5-8.0 on Mohs scale; Color: Pale blue to light green; Luster: Vitreous (glassy); Crystal structure: Hexagonal; Cleavage: Indistinct; Specific Gravity: 2.66-2.80
Formation & geological history
Formed in granitic pegmatites and hydrothermal veins through the cooling of mineral-rich magma. It is typically found in igneous rocks that crystallized deep beneath the Earth's surface millions of years ago.
Uses & applications
Primarily used as a gemstone in high-end jewelry (rings, necklaces, earrings). It is also a minor source of beryllium for industrial applications in aerospace and electronics.
Geological facts
The name 'Aquamarine' comes from the Latin 'aqua marina', meaning 'sea water'. Historically, it was believed to protect sailors and ensure a safe voyage. The largest gem-quality aquamarine ever mined was the 'Dom Pedro', weighing nearly 60 pounds.
Field identification & locations
Identify in the field by its distinctive pale blue hue, high hardness (cannot be scratched by steel), and hexagonal prismatic crystal habit. Common locations include Brazil, Pakistan, Afghanistan, and the Ural Mountains in Russia.
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