Refinishing
re·fin·ish·ing | (ˌ)rē-ˈfi-nish-iŋ
verb
The restoring of a finish to its initial state
Refinishing is the act of reapplying and restoring the finish to a piece of jewelry to return it to its original state. Most types of finish will eventually need to be refinished because of the nature of the finishing techniques used. Brushed and sandblasted finishes will start to become smooth over time without refinishing and should be reapplied after a set period of time. A polished finish will similarly start to lose its sheen over time and should be reapplied. Restoring the finish to a piece of jewelry is not dissimilar to the original application of the finish. The duration of the finish will vary, however. For example, white gold plating is recommended to be updated every year or so.