A jewelry item that is cast has been made by a process that involves pouring molten metal into a mold and letting it harden. This process began in the 4th millennium B.C. starting with simple one-piece molds and evolved to three-dimensional two piece molds. There are many mold types and casting methods still in use today.

Lost-Wax Cast Gold with False Filigree Decoration,
10th-15th Century, Colombia.