This is possible, but you will have to do us a favor. To get pure bullion, you have to ensure that your gold is pure (24k gold) without a single impurity. Also, the other reason this is possible that our vacuum cuts of the air. In that case, you will get a gold bar with a surface that shines like that of a mirror. However, if there are impurities, we can advise you on how to get rid of them so that you end up with a pure gold bar for your production or marketing purposes. Our main aim is to see that you are happy with our services. Since you might not be aware of other things, as long you strike a deal with us, we will help you learn everything that you need to know about gold and silver bar casting.