This material comprises a base metal, typically sterling silver, coated with a layer of gold. The gold layer must be at least 2.5 microns thick and possess a fineness denoted by its karat value. For instance, the designation indicates the gold plating conforms to specific standards regarding purity and thickness, differentiating it from simple gold plating.
The resulting item presents an accessible option, blending the aesthetic appeal of solid gold with the cost-effectiveness of using a less expensive core metal. This combination offers enhanced durability compared to thinner gold plating, while providing a precious metal finish. Historically, this method has been utilized to create jewelry and decorative objects that offer a luxurious appearance without the expense of solid gold construction.