Cast gold bars are the result of a simple and authentic production process in which molten gold is poured into a pre-shaped mold. Because the mold is removed after the gold has solidified, these gold bars often have a rougher and less detailed appearance.
The basic principle of pouring gold into a mold is the same for every producer, but the final result differs per refinery. Differences can occur in mold type, cooling speed, pouring temperature, and finishing process. As a result, the surface can vary from smooth and shiny to matte and grainy, giving each cast gold bar its own unique appearance.
A cast gold bar is, depending on the producer, supplied in a soft plastic packaging containing the certificate (Umicore, Argor-Heraeus) or in a sealed package that also serves as a certificate (C. Hafner).
In addition to cast gold bars, you can also choose minted gold bars. Read more about the production process of the minted gold bar and about the differences between minted and cast gold bars.