Aquamarine is the blue in color, or perhaps more fittingly, blue-green or aqua mixture of the stone beryl. Supplementary gemstone color variants that fit in to beryl includes emerald, morganite, and heliodor. Other varying and assorted colors of beryl are clearly referred to by their color, such as red beryl.
Aquamarine is colored by the trace amounts of iron that sneaks their way into the crystal composition. Most gem stone aquamarines have been heated delightly to produce the all the rage blue-green colors from a lesser amount of pleasing yellow or pale stones. The class leading manufacturer of aquamarines is the motherland of Brazil, which has numerous mines. Pakistan, including the many U.S. localities, produces breathtaking specimens as well. Aquamarine is normally considered as the birthstone for March.
Locations of deposits:
It occurs at most localities which yield ordinary beryl, some of the finest coming from Russia. The gem-gravel placer deposits of Sri Lanka contain aquamarine. Clear yellow beryl, occurs in Brazil, and is sometimes called aquamarine chrysolite. When corundum presents the bluish tint of typical aquamarine, it is often termed Oriental aquamarine.
In the United States, aquamarines can be found at the summit of Mt. Antero in the Sawatch Range in central Colorado. In Wyoming, aquamarine has been discovered in the Big Horn mountains, near Powder River Pass. In Brazil, there are mines in the states of Minas Gerais, Espírito Santo and Bahia. Colombia, Zambia, Madagascar, Malawi, Tanzania and Kenya also produce aquamarine.
The biggest aquamarine ever mined was found in the city of Marambaia, Minas Gerais, Brazil, in 1910. It weighed over 110 kg, and its dimensions were 48.5 cm long and 42 cm in diameter.
Aquamarine is the official state gem of Colorado and Missouri.