This is a single earring that is broken. The letter "K" is stamped on it, but the numbers are not clearly readable. (I tried many times, but they didn't show up in the photos. See photo 3.) I don't know the material, so please understand. There is no box. It will be placed in a clear OPP bag and shipped via Yu-Packet Post Mini. - Color: Gold - Design: Mirror ball - Size: Approximately 0.7cm