Answer by
Dyannen (24)
Sterling silver rings which have no surface treatment can be sized. Oxides and applied oxidation can be replaced when after polishing. However, specialty coatings may be used to retard tarnishing on silver. E-coating, and Rhodium plating are two examples of factory applied anti-tarnish that would need to be removed before sizing. The coatings should be reapplied when sizing is finished.