mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Hardness: 7.5-8 on the Mohs scale. Color: Pale blue to light green. Luster: Vitreous (glass-like). Crystal structure: Hexagonal. Cleavage: Indistinct. Specific gravity: 2.67-2.74.

Hardness: 7
Color: Pale blue to light green
Luster: Vitreous (glass-like)

Identified June 27, 2026More mineral →

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Physical properties

Hardness: 7.5-8 on the Mohs scale. Color: Pale blue to light green. Luster: Vitreous (glass-like). Crystal structure: Hexagonal. Cleavage: Indistinct. Specific gravity: 2.67-2.74.

Formation & geological history

Formed in pegmatites, which are igneous rocks that result from the cooling of magma. Also found in metamorphic rocks like schist. Dating varies by location but often associated with Mesozoic to Cenozoic geological events.

Uses & applications

Primarily used as a gemstone in jewelry (rings, earrings, necklaces). In industry, beryl is a source of beryllium, used in aerospace and electronics.

Geological facts

Aquamarine is the birthstone for March. Its name is derived from the Latin 'aqua marina', meaning 'water of the sea'. The largest gem-quality crystal ever found weighed 243 pounds.

Field identification & locations

Identify by its distinct hexagonal crystal shape (in raw form) and its pale blue color. Commonly found in Brazil, Pakistan, and Madagascar. Collectors look for clarity and intensity of blue color.

Other mineral specimens

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Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral