If you don't want to buy a police ring that everyone else already has, you can actually design your own. Many online jewelers offer great deals to those who work in law enforcement and want a customized ring of their own.
Typically, you would be able to choose if the ring is for a man or a woman, the size that is needed, the branch of service and the type of metal you wish to have on your police ring. You can choose to have your ring engraved with your name, your department or your rank. After choosing these items you are able to choose the stone of your choice to go in the center of your ring. Often your choice will be your birthstone. You can even choose the cut of the stone that you order. After that, your work is basically done with the exception of paying for your new, customized police ring!