gemstone
Aquamarine
Beryl (Be3Al2(SiO3)6)
Hardness of 7.5 to 8 on the Mohs scale, pale blue to light greenish-blue color, vitreous luster, hexagonal crystal system, poor basal cleavage, and a specific gravity of 2.68 to 2.74.
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Physical properties
Hardness of 7.5 to 8 on the Mohs scale, pale blue to light greenish-blue color, vitreous luster, hexagonal crystal system, poor basal cleavage, and a specific gravity of 2.68 to 2.74.
Formation & geological history
Forms primarily in pegmatites and in cavities within granitic rocks through hydrothermal processes, often crystallizing from cooling magma rich in beryllium, silicon, and aluminum.
Uses & applications
Widely used as a precious gemstone in fine jewelry, rings, necklaces, earrings, and prized by mineral collectors.
Geological facts
Aquamarine is the March birthstone. The largest gem-quality aquamarine ever found was in Brazil in 1910, weighing over 110 kilograms.
Field identification & locations
Identified by its distinctive light blue or cyan color, hexagonal prismatic crystal habit, and high hardness. Commonly found in Brazil, Madagascar, Pakistan, and the USA.
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