Difference between revisions of "True Blue"

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Discovered in the Yukon, Canada.  An exceptionally dark blue aquamarine, whose color is the result of an extremely high concentration of iron.  Unlike the Maxixe beryl, the color is photostable.<br>
 
==External links==
 
==External links==
 
[http://www.truenorthgems.com/s/Photos_TrueBlue.asp True North Gems]<br>
 
[http://www.truenorthgems.com/s/Photos_TrueBlue.asp True North Gems]<br>
 
[http://www.geology.gov.yk.ca/publications/yeg/yeg04/21_turner.pdf#search=%22true%20blue%20aquamarine%5D%22 Mineralogical and geochemical study of True Blue Aquamarine Showing]
 
[http://www.geology.gov.yk.ca/publications/yeg/yeg04/21_turner.pdf#search=%22true%20blue%20aquamarine%5D%22 Mineralogical and geochemical study of True Blue Aquamarine Showing]

Revision as of 09:11, 4 October 2006

True Blue beryl
Chemical composition Beryllium Aluminium Silicate Be3Al2(SiO3)6
Crystal system Hexagonal
Habit edit me
Cleavage edit me
Fracture edit me
Hardness 7.5
Optic nature edit me
Refractive index 1.57 - 1.58
Birefringence edit me
Dispersion edit me
Specific gravity 2.69
Lustre Vitreous
Pleochroism edit me

Discovered in the Yukon, Canada. An exceptionally dark blue aquamarine, whose color is the result of an extremely high concentration of iron. Unlike the Maxixe beryl, the color is photostable.

External links

True North Gems
Mineralogical and geochemical study of True Blue Aquamarine Showing