Archive:Aquamarine: Difference between revisions
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* [[List of minerals]] | * [[List of minerals]] | ||
== References == | ĐÄŋ== References == | ||
* Weinstein, Michael, 1958, ''The World of Jewel Stones'' Sheriden House, New York, pp 104-107 | * Weinstein, Michael, 1958, ''The World of Jewel Stones'' Sheriden House, New York, pp 104-107 | ||
* Diamond Bug. [http://diamondbug.blogspot.com/2006/03/flawless-aquamarine-march-birthstone.html "Flawless Aquamarine: March Birthstone"]. Retrieved March 16, 2006. | * Diamond Bug. [http://diamondbug.blogspot.com/2006/03/flawless-aquamarine-march-birthstone.html "Flawless Aquamarine: March Birthstone"]. Retrieved March 16, 2006. | ||
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[[nl:Aquamarijn]] | [[nl:Aquamarijn]] | ||
[[ja:アクアマリン]] | [[ja:アクアマリン]] | ||
[[no:Akvamarin]] | [[no:Akvamarin]]'''Bold text''''''Bold text''''''Bold text''''''Bold text'''''Italic text''''Italic text''''Italic text''''Italic text''[[Link title]][[Link title]][[Link title]][[Link title]][[Link title]][http://www.example.com link title][http://www.example.com link title][http://www.example.com link title] | ||
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Revision as of 19:54, 23 May 2006
Aquamarine (Lat. aqua marina, "water of the sea") is a gemstone-quality transparent variety of beryl, having a delicate blue or blue-green color, suggestive of the tint of sea-water. It's closely related to the gem emerald. Colors vary and yellow beryl, called heliodor; rose pink beryl, morganite; and white beryl, goshenite are known.
Aquamarine is a beryl with a hexagonal crystal structure and a chemical formula of Be3Al2Si6O18, a beryllium aluminium silicate mineral. It has a specific gravity of 2.68 to 2.74 and a Mohs hardness of from 7.5 to 8. Aquamarine typically is on the low end of the specific gravity range, normally at less than 2.7. The pink variety exhibits a high specific gravity of around 2.8. Refractive indices range around 1.57 to 1.58.
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, such as occurs in Brazil, 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 Brazil, there are mines in the states of Minas Gerais, Espírito Santo and Bahia. Zambia also produces nice aquamarine as well as Madagascar, Malawi,Tanzania and Kenya. Much of today's aquamarine is heated to give it a better color blue.
The biggest aquamarine ever mined was found at 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.
Culture and historical/mythical usage
Aquamarine is the birthstone associated with March. It is also the gemstone for the 19th Anniversary.
People in the Middle Ages thought that aquamarine could magically overcome the effects of poison.
See also
ĐÄŋ== References ==
- Weinstein, Michael, 1958, The World of Jewel Stones Sheriden House, New York, pp 104-107
- Diamond Bug. "Flawless Aquamarine: March Birthstone". Retrieved March 16, 2006.
bg:Аквамарин da:Akvamarin de:Aquamarin et:Akvamariin fr:Aigue-marine lt:Akvamarinas nl:Aquamarijn ja:アクアマリン no:AkvamarinBold text'Bold text'Bold text'Bold textItalic text'Italic text'Italic text'Italic textLink titleLink titleLink titleLink titleLink titlelink titlelink titlelink title
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pl:Akwamarynpt:Água-marinha
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vi:Berin
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uk:Аквамарин