Next the wax is placed in a flask and plaster is poured all around it. When the plaster hardens an exact impression of the model is formed inside the flask. The wax model is then burned out, and molten metal is injected. Once the metals cools and hardens, the plaster is broken away revealing the un-finished jewelry casting. The casting is filed, polished, and prepped for assembly. Then the stones (if there are any) are set and the piece is completed.