Just because the gold you have is not unrefined does not mean it is not valuable. In the event that you have been gifted or bought unrefined gold, you can find someone to do the refining for you. You should not be letting someone you cannot trust handle the process. Even though you have the names of accredited gold refiners at hand, there are questions you have to ask yourself before deciding on who to settle for. Prior to paying for the services or agreeing to work with a particular person, you ought to make sure you have talked about time it will take to get the finished product. You should expect anything from several days to weeks. If the purity levels are high then the refining time should not be long. Anyone who promises to be done with processing of a lot of unrefined gold in a day should not be trusted easily because the work might be done halfway. You have to keep your eyes open and be more involved in every process so that you will not end up paying high for the services. Make sure you know every cost you are incurring and how it has been arrived at. You need to get the charges in writing before you submit your gold for refining. Anyone who says there is a flat fee should not be easily trusted.
You should get an explanation on whether it is the material you take for refining that will be worked on and submitted back to you. Rarely will you get back exactly what you took to the refinery. The professionals usually do sampling, settlement, and assay determination and then combine it with other materials for refining. Nevertheless, do not confuse this to mean the product you submitted will be decreased or increased when you are getting the refined product. The truth is that at the end of the process you will be getting a pure metal but it might not be from the shipment you made.
Unrefined gold value varies from one batch to another. You need to ask about the analytical methods used in determining gold value by different refiners. Cupellation is the popular method in determining gold value all over the world. Gold is highly valuable which is why you need the assay determination to be done by more than one person just to be sure. No one should make you feel bad about that. Make sure you know how disputed assay results are settled before hiring.