Re: Irradiated gemstones

[Debby Steva <dps3c@virginia.edu>]

I know that some research reactors in the U.S. perform the irradiation for
paying customers.
The University of Virginia's research reactor irradiated quite a bit of topaz
until
operation was discontinued in July 1998.

D. Steva
University of Virginia

"Lamothe, Emelie" wrote:

> I don't know about "all" blue topazes but I do know that AECL no longer does
> this.  AECL did irradiate an awful lot of raw topazes during the mid- to
> late-80's.  I have no clue as to who, if any one, does now.
>
> Emelie Lamothe
> lamothee@aecl.ca
> > ----------
> > From:         Franz Schoenhofer[SMTP:schoenho@via.at]
> > Reply To:     radsafe@romulus.ehs.uiuc.edu
> > Sent:         Wednesday January 26, 2000 11:51 AM
> > To:   Multiple recipients of list
> > Subject:      Irradiated gemstones
> >
>         [snip]
>
>          Among the description how different gem stones
> > are treated one paragraph read "All Blue Topazes presently in the market
> > were enhanced by irradiation and heating processes for color addition".
> >
> > Can this be confirmed?
> >
> > Franz
> >
> >
> > Franz Schoenhofer
> > Habicherg. 31/7
> > A-1160 Vienna
> > Austria
> > Tel.: +43-1-495 53 08
> > Fax.: same number
> > mobile phone: +43-664-338 0 333
> > e-mail: schoenho@via.at
> >
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