mineral

Aquamarine

Beryl (Be₃Al₂Si₆O₁₈)

Hardness: 7.5-8.0 (Mohs scale), Color: Pale blue to greenish-blue, Luster: Vitreous (glass-like), Crystal Structure: Hexagonal, Cleavage: Indistinct/Poor, Specific Gravity: 2.66-2.80

Hardness: 7

Identified April 26, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0 (Mohs scale), Color: Pale blue to greenish-blue, Luster: Vitreous (glass-like), Crystal Structure: Hexagonal, Cleavage: Indistinct/Poor, Specific Gravity: 2.66-2.80

Formation & geological history

Formed in granitic pegmatites and hydrothermal veins. It crystallizes from mineral-rich fluids as magma cools. Found in ancient geological formations reaching back hundreds of millions of years.

Uses & applications

Primarily used as a gemstone in high-end jewelry (rings, necklaces, earrings). Transparent and high-clarity specimens are highly sought after by collectors.

Geological facts

Aquamarine is the birthstone for March. The name comes from the Latin 'aqua marina', meaning 'sea water'. Historically, it was believed to protect sailors and ensure a safe voyage.

Field identification & locations

Identified by its hexagonal crystal habit and characteristic watery blue color. Look for clarity and the absence of eye-visible inclusions in faceted stones. Often found in Brazil, Pakistan, and Madagascar.