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Quartz (Var: Amethyst) : SiO2

Copyright © J.Ralph 2009
 
 
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Quartz (Var: Amethyst) : SiO2

Copyright © J.Ralph 2009  - This image is copyrighted. Unauthorized reproduction prohibited.

Quartz crystal with hourglass amethystine zoning from Morocco. Approx 3.5cm

Jordi Fabre specimen, Ste Marie-aux-Mines show 2009

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Photo added: 4th Jul 2009