Due to various reviews on these earrings that said that the earrings are very small (max. 4 mm diameter) I had ordered for the second hole on the right ear. the stone at my chain has exactly the same color and give a diameter of 4 mm. These earrings are slightly larger. Therefore, I had to get used to it because I really normal, small earrings in this 2nd ear hole had. Amazingly, the earrings but really a diameter of 4 mm maximum 4.5. What can account for such a minimal difference is amazing.