Bars up to 100 gram are extruded and laminated in an assay card. Bars with a weight of 250 gram – 1 kg are casted. Each gold bar contains a minimum of .9999 gold. Heraeus is a well established mint that has been in business for more than 160 years. With a gold bar from Heraeus, you can rest assure that your gold bar is of German quality from a mint that is among the most renowned in the world.