And I learned something new today, I had no idea that that's what amethyst is, seen 'em so many times, but no idea that it's the iron that makes them that colour. Thanks for the informative post. It's a such a pretty specimen.
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You are welcome. Amethyst is quite a common crystal. I gave my aunt a small cluster for Christmas one year it was just 13.00 dollars. The large geodes are quite expensive.