These gorgeous sterling silver Halo Earrings will become your new favourite accessory; they are classic, timeless and feature easy-to-close butterfly clasps. These beautiful studs are perfect for elevating your everyday look. Product information. Size : Approx. 7mm. Material : Sterling silver. Gemstone : Cubic zirconia stones. Please note we do not offer a refund or exchange on earrings due to hygiene reasons.