Product Info: • All Smiley Moon earrings are handmade in my small home studio in Pennsylvania. Thanks so much for supporting my art and for shopping small! :) •All earring hooks used are stainless steel (and nickel free). The charm itself is made of light-weight acrylic. •Earrings will come packaged on one of our earring cards with rubber backings to secure them, the style and size of the card may vary. If you prefer a certain size card, please message us prior to purchasing. •As all earrings are handmade, please allow for slight variations. ( sea slug earrings , nudibranch earrings , sea creature earrings )