Difference between revisions of "Ammolite"

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{{Ammolite}}
 
{{Ammolite}}
  
Found in Southern Alberta, Canada and in Northern Montana, USA <br>
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'''UNDER CONSTRUCTION'''
Fossilized ammonite (aragonite), organic<br>
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Often sold as a triplet due to the fragile nature of ammolite<br>
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Ammolite is an organic gemstone that is mined in Southern Alberta, Canada.<br>
Color comes from interference, red=thick, green=less thick, blue=thin<br>
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Fossilized ammonite (aragonite),<br>
Irridenscence (difraction)
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Natural ammolite has a hardness of 4.5, but is most often sold as a doublet or triplet in order to protect the gem material.  Natural stones are usually impregnated with an epoxy to strengthen the ammolite.<br>
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Color comes from interference, and it dependant on the thickness of the layers of aragonite.  From thickest to thinnest: red, green, blue, purple<br>
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Iridenscence (difraction)
  
 
==External links==
 
==External links==
 
[http://www.gemsociety.org/info/gems/ammolite.htm Gem Society - Ammolite]
 
[http://www.gemsociety.org/info/gems/ammolite.htm Gem Society - Ammolite]

Revision as of 05:35, 29 October 2006

Ammolite
Chemical composition CaC03 with trace elements
Crystal system Orthorhombic
Habit Fractured and non-fractured flat layers
Fracture Parting along layers
Hardness 3.5
Refractive index 1.525 - 1.670
Birefringence 0.135 - 0.145
Specific gravity 2.60 - 2.85
Lustre Vitreous to resinous

UNDER CONSTRUCTION

Ammolite is an organic gemstone that is mined in Southern Alberta, Canada.
Fossilized ammonite (aragonite),
Natural ammolite has a hardness of 4.5, but is most often sold as a doublet or triplet in order to protect the gem material. Natural stones are usually impregnated with an epoxy to strengthen the ammolite.
Color comes from interference, and it dependant on the thickness of the layers of aragonite. From thickest to thinnest: red, green, blue, purple
Iridenscence (difraction)

External links

Gem Society - Ammolite