Check the listing for details. 50 Gram Bar Graphite Gold Ingot Mold for Gold & Silver Casting. Condition: New. Listed at 24.95 USD. The 50 Gram Bar Graphite Gold Ingot Mold is a specialized tool used in the mining industry for creating gold ingots. The graphite material used in the mold ensures a smooth and sleek finish on the resulting ingot, adding to its overall aesthetic appeal.