The term refers to sterling silver that has undergone a controlled oxidation process. This process deliberately darkens the surface of the metal, creating a blackened or antiqued appearance. This darkening is achieved through exposure to chemicals, often sulfur-containing compounds, which react with the silver to form silver sulfide. This layer is not rust, but a tarnish that is intentionally produced. For example, jewelry makers use this technique to highlight intricate details and add depth to their designs.
This intentionally tarnished finish offers several aesthetic and practical advantages. It enhances the visual appeal of silver items, accentuating textures and patterns. This darkened surface can add a sense of history or vintage charm. Furthermore, the process can provide a degree of protection against further unwanted tarnishing, as the existing sulfide layer acts as a barrier, slowing down the reaction with other environmental elements. Historically, this method has been used to create decorative objects with an aged or antique style.
