Rock Identifier
Aquamarine (Beryl (Be3Al2(SiO3)6)) — gemstone
gemstone

Aquamarine

Beryl (Be3Al2(SiO3)6)

AI-generated identification · may be incorrect

Mohs hardness of 7.5 to 8, pale blue to deep blue-green color, vitreous luster, hexagonal crystal system, poor cleavage, specific gravity of 2.68 to 2.74.

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Physical properties

Mohs hardness of 7.5 to 8, pale blue to deep blue-green color, vitreous luster, hexagonal crystal system, poor cleavage, specific gravity of 2.68 to 2.74.

Formation & geological history

Forms within pegmatites and hydrothermal veins through the cooling of molten magma rich in beryllium and other volatile elements.

Uses & applications

Widely used as a precious gemstone in jewelry, particularly in rings, necklaces, and earrings.

Geological facts

Aquamarine is the March birthstone and its name is derived from the Latin words for water and sea.

Field identification & locations

Identified by its distinct hexagonal prisms, characteristic light blue or cyan color, and high hardness that scratches glass. Major sources include Brazil, Madagascar, and Pakistan.