Wearing our Skull Butterfly Earrings symbolizes transformation and change due to their life cycle from caterpillar to butterfly. Material 925 Sterling Silver, Nickel Free, Hypoallergenic, Suitable for Sensitive Skin. Description A pair of Back Ball Earrings (2 pieces) Butterfly Size: 4*6mm Back Ball Size: 3*3mm Our jewelry is packed in a delicate jewelry bag and stunning gold embossed gift box. Click packaging to see more. Color Silver: All materials are made of 925 Sterling Silver with extra Rh