The term describes a specific type of jewelry composed of a base metal, sterling silver, coated with a layer of gold. This gold layer is not simply gold plated; instead, it must adhere to strict requirements to be considered authentic. Specifically, the gold must be at least 10 karats in purity and a minimum of 2.5 microns thick. A piece correctly labeled as such presents a durable and visually appealing alternative to solid gold items. For instance, earrings fashioned using this technique offer a balance of affordability and aesthetics.
The appeal stems from its blending of valuable materials. The sterling silver core provides structural integrity, while the substantial gold layer imparts a luxurious aesthetic. This approach offers a compelling combination of visual appeal and longevity, making it suitable for individuals seeking a more accessible option compared to solid gold jewelry. Historically, similar techniques have been employed to create accessible versions of precious metal objects, extending their availability to a broader audience.