This method produced a dangerously high degree of long-term residual radioactivity and has been discontinued, although radium-treated green diamonds are still occasionally found in markets and can be detected by a Geiger counter or making its autoradiograph using a photographic film.
This method produced a dangerously high degree of long-term residual radioactivity. This method has been discontinued. Radium-treated green diamonds are still occasionally found in markets. This method can be detected by a Geiger counter. This method can be making its autoradiograph. This method is using a photographic film.