Exposed to radiation from an internal or external source.

Subjecting something to radiation. This is sometimes done to gemstone and pearl beads in order to change their color or clarity.

A diamond which has been subject to radiation, usually to improve its colour. Most processes are kept as commercial secrets, but no residual radiation is retained by the treated stone.

When objects are exposed to radiation, like X-rays, they are irradiated.

Having been exposed to or treated with radiation.

The bombarding of a stone with gamma rays to alter the color of a gem.

Having been subjected to ionising radiation e.g. gamma rays.

A gemstone treated with radiation for the purpose of changing the color of the gemstone.