Today, in dozens of intricate steps, our craftspeople carry on this tradition of quality and excellence with every piece of Mt. Rushmore Black Hills Gold and diamond jewelry. Take a fascinating FREE tour through our jewelry factory to watch up-close and learn the details of how gold jewelry is made. During the tour you’ll see the ancient process of lost-wax casting and how diamonds are cast in molten gold! Diamond cutting has been added to our Free Factory Tour where you will see the precise process involved in creating one of the world’s most prized possessions.