mineral

Aquamarine (Pale variety)

Beryl (Be3Al2Si6O18)

Hardness: 7.5–8.0 on Mohs scale; Color: Pale greenish-blue to clear; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Imperfect/Indistinct; Specific Gravity: 2.67–2.90

Hardness: 7
Color: Pale greenish-blue to clear
Luster: Vitreous (glassy)

Identified March 11, 2026More mineral →

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Physical properties

Hardness: 7.5–8.0 on Mohs scale; Color: Pale greenish-blue to clear; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: Imperfect/Indistinct; Specific Gravity: 2.67–2.90

Formation & geological history

Formed in granitic pegmatites and hydrothermal veins through late-stage cooling of magma; involves the presence of beryllium, aluminum, and silica enriched with iron trace elements.

Uses & applications

Primary use is in gemstone jewelry; historically used as a source of beryllium for industrial alloys, though high-quality crystals are reserved for facetting.

Geological facts

In ancient times, sailors believed aquamarine would calm waves and keep them safe at sea. The largest gem-quality aquamarine ever found was the 'Dom Pedro', weighing approximately 60 pounds before cutting.

Field identification & locations

Identify by its hex-prism habit in raw form and high hardness (scratches glass/quartz easily). Commonly found in Brazil, Pakistan, and Madagascar. Collectors look for clarity and 'eye-clean' specimens.