TODAYFUL Hoop Earrings (Pair) Outer diameter is approximately 2.8cm. I purchased these in gold, but they also look silver. These are medium-sized hoop earrings with a simple and sophisticated design, and they have a strong presence. I also have silver ones for sale, so please take a look if you're interested. These are not new, but used, and I will ship them after disinfecting them. Due to air transport, the gold may turn black. In that case, polishing them with gold polish should restore them to their original gold color. I have personally had such an experience in the past. We do not accept returns or refunds even if the gold turns black due to air transport. Please purchase only if you understand the above. If you have any questions, please feel free to ask.