My mother has been looking for an old movie. The description was that the a planet had (she thinks) has just been through a nuclear war, or was after one and is nearly extinct. She recalls in this movie that the humanoids had some kind of gem in their chest of the humanoid. From what she recalls there were different colors in the gems to signify certain things. I believe the movie may have been made between 1950-1980s, but because I have never seen it I cannot tell. In this movie there was a humanoid that had a rare gem and decided to do something. Well that is all I know. I would really like to find this movie again for my mother. Can anyone identify this movie? Thanks for your time.