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Why is some Sky Blue color Topaz available for sale if they are irradiated?

April 26, 2017BLUE color for sale irradiated sky Topaz

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Why is some Sky Blue color Topaz available for sale if they are irradiated?

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Currently the AGTA code is “R” (irradiated) for both Blue Topaz treatments, electron accelerated and neutron irradiated. Electron accelerated product is not included in the current regulations. The current regulations are for neutron irradiated product (Swiss & London color) only. Our larger sizes of Sky Blue color Topaz are treated by electron acceleration.