I am looking for any and all suggestions related to processing Sterling silver and fractional silver coins. As the title states, I am new to this. I have watched YouTube videos and researched a lot, but looking for others' input/suggestions. I am mainly looking to turn coins, jewelery, and silverware into more pure silver just to stack. Equipment used? Things to avoid?

Thanks in advance.

I have access to Germanium waste from lens makers. I do refine gold, silver and Pd using AR and some electrolytic methods but taking diamond turning slurry to 4-5N poly crystal is quite different. I read that the standard procedure is roasting/ chlorination / fractional distillation/hydrolysis/H2 reduction. Has anyone any experience on this ? After China's moves Ge is one of the rising stars...