mineral

Aquamarine

Beryllium Aluminum Silicate (Be3Al2Si6O18)

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

Hardness: 7
Color: Pale blue to light green
Luster: Vitreous (glassy)

Identified January 25, 2026More mineral →

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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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