Commercial refineries typically follow a four-stage standard to ensure maximum recovery and purity.
: The pure crystals or powder are melted and cast into granules (shot), coins, or bars ranging from 1 oz to 1,000 oz. Top Recognized Refiners How to refine sterling silver sterling silver refiners
: Silver is dissolved in nitric acid, then precipitated as silver chloride (by adding salt) or "cement silver" (by adding copper). sterling silver refiners