Natural Science Forum / Earth Science / Mineralogy / June 2004

Is there any reliable method of conclusively determining whether
amethyst has been color enhanced with radiation and/or heat?  I have
heard conflicting opinions on this issue from different "experts".  I
am now always suspicious of deep amethyst at any reasonable price.

   Does anybody know how the recent "find" of Chinese green
"chromium" quartz is treated?
   Thanks!
       Alan

www.forevermoissanite.com
A new challenging situation for the gemmologists:
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