Aquamarine is the blue variety of Beryllium aluminum silicate or Beryl, and is very closely related to Emerald only difference is the color. Aquamarine gets its coloring from iron inclusions but its color saturation also depends on the impurity concentration and location in the specimen. Aquamarine ranges from light blue to bluish-green color and its transparency is usually opaque but can range up to transparent. The more valuable specimens are those showing a lighter blue hue with high transparency.
Aquamarine is a form of Beryl which is a clear mineral formed from beryllium, aluminum, silica, and oxygen. Sometimes it is able to form in metamorphic rocks but it can also sometimes be found in granite. When giant bodies of granitic magma cool very slowly, Aquamarine and its other forms of Beryl grow within the pegmatite veins where hot water that is saturated with minerals and metals is present. When magma interacts with pegmatites that are rich in minerals, the heat of the pegmatites from the magma is what causes the formation of Aquamarine. Almost all Aquamarines are formed within pegmatites. It is also possible to find this stone within high-temperature hydrothermal veins where tungsten and tin minerals are present.
Aquamarine is mined at its primary deposit, found in small veins of host rock or on the walls of cavities, deep underground. Aquamarine is found in mines all over the world, but never in sufficient quantities to warrant its own mine. Instead, it is regarded as a secondary mineral, alongside other minerals such as Black Tourmaline. Aquamarine crystals typically form columnar, hexagonal prisms. They can also form in clusters of hexagonal crystals and other shapes.
On the Mohs scale of mineral hardness aquamarine grades from a 7.5 to an 8. Aquamarine is found all over the world, some of the most notable finds come from Afghanistan, Angola, Austria, Brazil, China, India, Italy, Namibia, Nepal, Pakistan, Russia, United States, and Vietnam.
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