How stable is color produced by EBT process?
The color changes produced in diamonds by the irradiation process are irreversible. The color is stable and permanent under normal wear and tear. The color is not affected by chemicals, ultrasonic cleaners, steam cleaning, polishing or heating up to 1000F. Yellow, orange, red and pink colored diamonds are unaffected by heat even over 1000F. Blue and green colors may fade when the diamond is heated over 1000F. Special care of colored diamonds should be taken when resizing a ring or some jewelry repairs. Avoid exposing diamond to jewelers torch which may heat diamond to over 1000 F.