Coloured topaz solves Dutch funding blues

van Kasteren, Joost
October 1991
New Scientist;10/5/91, Vol. 132 Issue 1789, p22
Reports on gemstones that are being given rare colors by a process at the institute IRI in Delft, the Netherlands, using a nuclear reactor. The extra income earned in IRI; Topaz, as an example; Other gems that could be irradiated.


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