Archive:Aquamarine: Difference between revisions

Revision as of 12:27, 6 February 2008

Template:Otheruses1 Template:Infobox mineral Aquamarine (Lat. aqua marinā, "water of the sea") is a gemstone-quality transparent variety of beryl, having a delicate blue or turquoise color, suggestive of the tint of seawater. It's closely related to the gem emerald. Colors vary and yellow beryl (heliodor), rose pink beryl (morganite), and white beryl (goshenite) are known.

Composition

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.

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, 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, Madagascar, Malawi, Tanzania and Kenya also produce aquamarine.

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.

Aquamarine is the official state gem of Colorado.

Culture and historical/mythical usage

Aquamarine (along with bloodstone) 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.
Ancient sailors traveled with aquamarine crystals, believing that it would ensure a safe passage, and guarantee a safe return; they often slept with the stones under their pillow to ensure sound sleep. They believed the siren’s (mermaid) fish-like lower body was made of aquamarine.

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.
http://www.gemstone.org/gem-by-gem/english/aquamarine.html
http://mineral.galleries.com/minerals/gemstone/aquamari/aquamari.htm
http://www.mindat.org/min-289.html

Template:Jewellery Materials Template:Gems & Crystals

bg:Аквамарин cs:Akvamarín da:Akvamarin de:Aquamarin et:Akvamariin es:Aguamarina fr:Aigue-marine gl:Augamariña he:תרשיש (אבן חן) lv:Akvamarīns lt:Akvamarinas nl:Aquamarijn ja:アクアマリン no:Akvamarin pl:Akwamaryn pt:Água-marinha ro:Acvamarin ru:Аквамарин sl:Akvamarin (kamen) sr:Аквамарин fi:Akvamariini sv:Akvamarin vi:Ngọc berin tr:Akuamarin uk:Аквамарин

@@ Line 1: / Line 1: @@
 {{otheruses1|the mineral}}
 {{Infobox mineral
+| name        = Aquamarine
-| name = Aquamarine
+| category    = [[beryl]] variety
+| boxwidth    =
-| category = [[beryl]] variety
+| boxbgcolor  =
+| image       = Aquamarin cut.jpg
-| boxwidth =
+| imagesize   = 250px
+| caption     = Aquamarine
-| boxbgcolor =
+| formula     = Be<sub>3</sub>Al<sub>2</sub>Si<sub>6</sub>O<sub>18</sub><ref name="GRG"/>
+| molweight   =
-| image = Aquamarin cut.jpg
+| color       = transparent (or can be translucent if included), greenish blue to blue green, typically light in tone<ref name="GRG">[[Gemological Institute of America]], ''GIA Gem Reference Guide'' 1995, ISBN:0-87311-019-6</ref>
+| habit       =
-| imagesize = 250px
+| system      = [[hexagonal]]<ref name="GRG"/>
+| twinning    =
-| caption = Aquamarine
+| cleavage    = very difficult in one direction, almost never seen<ref name="GRG"/>
+| fracture    = [[conchoidal]]<ref name="GRG"/>
-| formula = Be<sub>3</sub>Al<sub>2</sub>Si<sub>6</sub>O<sub>18</sub><ref name="GRG"/>
+| mohs        = 7.5 - 8<ref name="GRG"/>
+| luster      = [[vitreous]] to resinous<ref name="GRG"/>
-| molweight =
+| polish      = [[vitreous]] <ref name="GRG"/>
+| refractive  = 1.577 - 1.583 (+/- .017)<ref name="GRG"/>
-| color = transparent (or can be translucent if included), greenish blue to blue green, typically light in tone<ref name="GRG">[[Gemological Institute of America]], ''GIA Gem Reference Guide'' 1995, ISBN:0-87311-019-6</ref>
-| habit =
-| system = [[hexagonal]]<ref name="GRG"/>
-| twinning =
-| cleavage = very difficult in one direction, almost never seen<ref name="GRG"/>
-| fracture = [[conchoidal]]<ref name="GRG"/>
-| mohs = 7.5 - 8<ref name="GRG"/>
-| luster = [[vitreous]] to resinous<ref name="GRG"/>
-| polish = [[vitreous]] <ref name="GRG"/>
-| refractive = 1.577 - 1.583 (+/- .017)<ref name="GRG"/>
 | opticalprop = Double refractive, uniaxial negative<ref name="GRG"/>
 | birefringence = .005 - .009<ref name="GRG"/>
+| dispersion  = .014<ref name="GRG"/>
-| dispersion = .014<ref name="GRG"/>
 | pleochroism = weak to moderate, blue and greenish blue; or different tones of blue with lighter tones associated with the optic axis direction <ref name="GRG"/>
 | fluorescence= inert<ref name="GRG"/>
+| absorption  = indistinct lines at 537 and 456nm. Depending on the depth of color, there is a strong line at 427nm.<ref name="GRG"/>
-| absorption = indistinct lines at 537 and 456nm. Depending on the depth of color, there is a strong line at 427nm.<ref name="GRG"/>
+| streak      =
+| gravity     = 2.72 (+.18, -.05)<ref name="GRG"/>
-| streak =
+| density     =
+| melt        =
-| gravity = 2.72 (+.18, -.05)<ref name="GRG"/>
+| fusibility  =
+| diagnostic  =
-| density =
+| solubility  =
+| diaphaneity =
-| melt =
+| other       =
-| fusibility =
-| diagnostic =
-| solubility =
-| diaphaneity =
-| other =
 }}
+'''Aquamarine''' (Lat. ''aqua marinā'', "water of the sea") is a [[gemstone]]-quality transparent variety of [[beryl]], having a delicate blue or [[turquoise]] color, suggestive of the tint of [[seawater]]. It's closely related to the gem [[emerald]]. Colors vary and yellow beryl ([[heliodor]]), rose pink beryl ([[morganite]]), and white beryl ([[goshenite]]) are known.
-'''Aquamarine''' (Lat. ''aqua marinā'', "water of the sea") is a [[gemstone]]-quality transparent variety of [[beryl]], having a delicate blue or [[turquoise]] color, suggestive of the tint of [[seawater]]. It's closely related to the gem [[emerald]]. Colors vary and yellow beryl ([[heliodor]]), rose pink beryl ([[morganite]]), and white beryl ([[goshenite]]) are known.
 ==Composition==
 Aquamarine is a beryl with a [[Hexagonal (crystal system)|hexagonal]] [[crystal structure]] and a [[chemical formula]] of Be<sub>3</sub>Al<sub>2</sub>Si<sub>6</sub>O<sub>18</sub>, a [[beryllium]] [[aluminium]] [[Silicate minerals|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 index|Refractive indices]] range around 1.57 to 1.58.
 ==Locations of deposits==
+It occurs at most localities which yield ordinary beryl, some of the finest coming from [[Russia]]. The gem-gravel [[Placer mining|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.
-It occurs at most localities which yield ordinary beryl, some of the finest coming from [[Russia]]. The gem-gravel [[Placer mining|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 [[Mount Antero|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, Madagascar, Malawi, Tanzania and Kenya also produce aquamarine.
 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.
 Aquamarine is the [[List of U.S. state minerals, rocks, stones and gemstones|official state gem]] of Colorado.
 ==Culture and historical/mythical usage==
 *Aquamarine (along with [[bloodstone]]) is the [[birthstone]] associated with [[March (month)|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]].
+*Ancient sailors traveled with aquamarine crystals, believing that it would ensure a safe passage, and guarantee a safe return; they often slept with the stones under their pillow to ensure sound sleep. They believed the siren’s ([[mermaid]]) fish-like lower body was made of aquamarine.
-*Ancient sailors traveled with aquamarine crystals, believing that it would ensure a safe passage, and guarantee a safe return; they often slept with the stones under their pillow to ensure sound sleep. They believed the siren’s ([[mermaid]]) fish-like lower body was made of aquamarine.
 == See also ==
 [[Image:Beryl09.jpg|thumb|left|Three Beryl Crystals - Aquamarine rough crystal in the center]]
 {{commonscat|Aquamarine}}
 * [[List of minerals]]
 == References ==
 <references/>
 * 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.
 *http://www.gemstone.org/gem-by-gem/english/aquamarine.html
 *http://mineral.galleries.com/minerals/gemstone/aquamari/aquamari.htm
+*http://www.mindat.org/min-289.html
-*http://www.mindat.org/min-289.html
 {{Jewellery Materials}}
 {{Gems & Crystals}}
 [[Category:Silicate minerals]]
+[[Category:Gemstones]]
-[[Category:Gemstones]]
 [[bg:Аквамарин]]
 [[cs:Akvamarín]]
 [[da:Akvamarin]]
 [[de:Aquamarin]]
 [[et:Akvamariin]]
 [[es:Aguamarina]]
 [[fr:Aigue-marine]]
 [[gl:Augamariña]]
 [[he:תרשיש (אבן חן)]]
 [[lv:Akvamarīns]]
 [[lt:Akvamarinas]]
 [[nl:Aquamarijn]]
 [[ja:アクアマリン]]
 [[no:Akvamarin]]
 [[pl:Akwamaryn]]
 [[pt:Água-marinha]]
 [[ro:Acvamarin]]
 [[ru:Аквамарин]]
 [[sl:Akvamarin (kamen)]]
 [[sr:Аквамарин]]
 [[fi:Akvamariini]]
 [[sv:Akvamarin]]
 [[vi:Ngọc berin]]
 [[tr:Akuamarin]]
 [[uk:Аквамарин]]

wikademia>Vsmith

Revision as of 12:27, 6 February 2008

Composition

Locations of deposits

Culture and historical/mythical usage

See also

References