Sold as a pair. Measurement: Please refer to the picture. Red markings of the ruler are in mm/cm. Made with hypoallergic materials. For CLIP-ONS: Depending on the original design of the earrings, either metal or elastic resin clips may be used. If you have any specific preference, please contact me directly to discuss possible options before your purchase. Please feel free to message me directly if you have any questions! White Sakura Stud Earrings, Cherry Blossom Mother Of Pearl Acrylic Resin Flower Clip On, Pierced