RE: Irradiated gemstones

[Craig Reed <CReed@novoste.com>]

Recommend:

"Radioactive and Radiation Treated Gemstones" by Charles E. Ashbaugh,III
of the Gemological Institute of America, in Volume 2, Number 1 of
Radioactivity and Radiochemistry.

Caretaker Publications
POB 19656
Atlanta, GA 30325
Tel 404 352 4620
Fax 404 352 0515

Craig Reed
creed@novoste.com


-----Original Message-----
From: David Whitfill [mailto:DWhitfil@kdhe.state.ks.us]
Sent: Wednesday, January 26, 2000 3:07 PM
To: Multiple recipients of list
Subject: RE: Irradiated gemstones



You can do a net search under keyword "color centers." Below is a hit
about
topaz irradiations:

http://www.geology.wisc.edu/~jill/Lect7.html#colorcenters

Another hit of note-

http://minerals.gps.caltech.edu/FILES/Visible/BERYL/Index.htm






"Bjorn Cedervall" <bcradsafers@hotmail.com>@romulus.ehs.uiuc.edu on
01/26/2000 01:13:50 PM

Please respond to radsafe@romulus.ehs.uiuc.edu

Sent by:  radsafe@romulus.ehs.uiuc.edu


To:   Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
cc:

Subject:  RE: Irradiated gemstones


>remember.  Topaz was the most successful of the irradiations.
I wonder what the mechanisms may be. Could it be trapped free radicals?

Bjorn Cedervall  bcradsafers@hotmail.com

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