Chain Earring Sold as a single piece. Karat: 14K. Material: Goldfilled. Dimensions: Length: 5cm. What is goldfilled? Goldfilled jewellery is composed of a solid layer of gold that is bonded to a base of another metal, in this case the material copper. Goldfilled jewellery is more durable than regular gold plated, and it keeps looking shiny and new even with decades of wear.