CORA REFINING refines gold, palladium, platinum and silver. Materials accepted include crowns, bridges, buttons, filters, sweeps, grindings and more. The company helps both large and small labs in all 50 states and Canada increase their cash flow by providing accurate returns with low fees and provides free shipping supplies as well as free, insured shipping via FedEx®. A price lock-in feature is available so you can rest easy while the markets fluctuate.