mineral

Beryl (Aquamarine) in Matrix

Beryllium aluminum silicate (Be3Al2(SiO3)6)

Hardness: 7.5-8.0 (Mohs scale), Color: Pale blue to greenish-blue (aquamarine), Luster: Vitreous, Crystal structure: Hexagonal, Cleavage: Imperfect/Poor, Specific gravity: 2.63-2.80

Hardness: 7

Identified March 24, 2026More mineral →

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Physical properties

Hardness: 7.5-8.0 (Mohs scale), Color: Pale blue to greenish-blue (aquamarine), Luster: Vitreous, Crystal structure: Hexagonal, Cleavage: Imperfect/Poor, Specific gravity: 2.63-2.80

Formation & geological history

Formed in granitic pegmatites or hydrothermal veins under high pressure and temperature. The blue color is derived from iron impurities (Fe2+ and Fe3+) within the crystal lattice. These specimens are often found in Precambrian to Tertiary formations.

Uses & applications

A primary ore of beryllium; high-clarity crystals are used in fine jewelry as gemstones. Lower quality specimens like this are used for mineral collecting and lapidary practice.

Geological facts

Beryl is the host mineral for some of the world's most famous gemstones, including Emerald and Morganite. The name 'Aquamarine' comes from the Latin 'aqua marina', meaning 'sea water' because of its color.

Field identification & locations

Identify in the field by its distinct hexagonal crystal habit and its ability to scratch glass and quartz easily. Commonly found in Brazil, Pakistan, and the United States (Colorado). Look for pale blue inclusions embedded in a coarse, white or tan feldspar/quartz matrix.

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