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Re: Gemstone irradiation
As far as I know former Atomic Energy Corporation of South Africa (AEC) was irradiating diamonds to change the color (current name NECSA)
If you need I can get you the telephones and E-mail of people involved.
>>> AKR@nrc.gov 06/13/00 04:04PM >>>
Some useful references are in NUREG/CR-5883, "Health Risk Assessment of IrradiatedTopaz."
NUREGS can be requested from GPO at (202) 512-1800.
AKR@NRC.GOV
Dr. Eugene Taviv
tel :+ 27118002718 (b)
fax: +27118003195 (b)
tel: :+27117868402 (h)
fax::+27118875702 (h)
cell: 082-3756540
E-mail Eugene.Taviv@eskom.co.za (b)
E-mail tavive@icon.co.za (h)
>>> "Johannes Strydom" <fritz.strydom@ors.gatech.edu> 06/13 9:38 AM >>>
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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information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html