The Daisy Pearl features Swarovaki Pearls and a center Swarovski Crystal set in pure Medical Plastic. Medical Plastic is unique with 0% nickel. With Medical Plastic you avoid more than just nickel, you avoid other harmful substances such as lead, acrylics, cadmium, and more. These nickel free earrings are perfect for sensitive ears! The entire setting is 6mm. Available in four colors: White, Light Rose, Light Blue, Lavender.