RE: Gemstone irradiation

[Craig Reed <CReed@novoste.com>]

Excellent article on the subject in Radioactivity & Radiochemistry, Vol
2 Number 1 that was published by Caretaker Publications, POB 19656,
Atlanta, Georgia 30325 (404) 352-4620

Craig Reed
Novoste Corp

-----Original Message-----
From: Johannes Strydom [mailto:fritz.strydom@ors.gatech.edu]
Sent: Tuesday, June 13, 2000 9:38 AM
To: Multiple recipients of list
Subject: Gemstone irradiation


Hello,

Does anyone have a reference to indicate the approximate radiation dose
to
treat different gemstones.  I am specifically interested in the dose for
amethysts.  We will be using Co-60 gamma irradiation.  I know that in
topaz,
the coloration is not permanent when you use gammas as opposed to
neutrons,
but does anyone have any experience with other gemstones?  Does the same
hold true and how quickly does the coloration fade?  Thank you.

------------------------------------------------
Johannes "Fritz" Strydom
Health Physicist
Georgia Institute of Technology
(404) 894-3605
(404) 894-9325 fax
fritz.strydom@ors.gatech.edu


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