Rapid City, SD
Mt. Rushmore Black Hills Gold is situated in Rapid City, South Dakota, along US Highway 16 near the Mt. Rushmore area. The facility produces gold, silver, diamond, and gemstone jewelry through a multi‑step hand‑crafted process that can involve up to forty distinct stages, such as design, wax modeling, casting, grinding, polishing, and engraving. Visitors can attend a complimentary factory tour to observe the lost‑wax casting technique and the handling of diamonds in molten gold.