Difference between revisions of "Ammolite"
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{{Ammolite}} | {{Ammolite}} | ||
− | + | '''UNDER CONSTRUCTION''' | |
− | Fossilized ammonite (aragonite), | + | |
− | + | Ammolite is an organic gemstone that is mined in Southern Alberta, Canada.<br> | |
− | Color comes from interference, red | + | Fossilized ammonite (aragonite),<br> |
− | + | 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> | |
+ | Color comes from interference, and it dependant on the thickness of the layers of aragonite. From thickest to thinnest: red, green, blue, purple<br> | ||
+ | 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 | |
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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)