mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

AI-generated identification · may be incorrect

Hardness: 7.5-8 Mohs. Color: Light blue to sea-green. Luster: Vitreous. Crystal Structure: Hexagonal. Cleavage: Imperfect basal. Specific Gravity: 2.68-2.74.

Hardness: 7
Color: Light blue to sea-green
Luster: Vitreous

Identified July 26, 2026More mineral →

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Physical properties

Hardness: 7.5-8 Mohs. Color: Light blue to sea-green. Luster: Vitreous. Crystal Structure: Hexagonal. Cleavage: Imperfect basal. Specific Gravity: 2.68-2.74.

Formation & geological history

Formed predominantly in granite pegmatites and metamorphic hydrothermal veins, crystallized slowly from beryllium-rich magmatic fluids.

Uses & applications

Popular gemstone widely used in fine jewelry, beaded bracelets, cabochons, carved ornaments, and lapidary arts.

Geological facts

The name aquamarine is derived from the Latin 'aqua marina', meaning 'sea water', due to its distinctive pale blue-green color. It is the official birthstone for the month of March.

Field identification & locations

Can be identified by its distinctive sky-blue color, high hardness (scratches glass easily), vitreous luster, and lack of distinct cleavage. Common locations include Brazil, Madagascar, Pakistan, Russia, and Nigeria.