The terms “gold plated” and “gold filled” describe two distinct methods of applying a layer of gold to a base metal. Gold plating involves the electro-deposition of a very thin layer of gold onto a less valuable metal, such as nickel or brass. The thickness of the gold layer in plating is typically measured in microns, often less than one micron. An example would be a costume jewelry item advertised as having a “gold plated” finish, indicating a minimal amount of gold used.
Gold filling, conversely, utilizes a mechanical bonding process where a layer of gold is fused to a base metal core. This layer is significantly thicker than that found in gold plating, usually representing at least 5% of the item’s total weight. This increased gold content offers improved durability and resistance to wear. Historically, gold filling was a popular technique for creating affordable jewelry pieces that maintained a higher perceived value and lifespan compared to their plated counterparts. The longevity and tarnish resistance provide substantial advantages.
