10k Yellow Gold Endless Hoop Earrings, (0.45" Diameter) Klassics is 10k gold. 10k gold does not react with other elements and is durable; making it suitable for everyday wear 10k gold is not filled, plated or dipped. The collection may be hollow or solid depending on the construction and design of the piece Klassics includes earrings, chains and pendants; time-honored and classic designs