3D printed grapefruit slice earrings. Add a pop of color and summer fun to your style with these groovy and lightweight 3D printed earrings. The earring without the hook measures 1.5 inches in length and a little over an inch in width. I designed them in a 3D modeling program and then 3D printed them PLA, an Eco-friendly, corn-based plastic. They are printed in two pieces then glued together. The inner part is colored by hand then sealed with a protective coating. Hypoallergenic surgical steel findings are then put on by hand, great for people with sensitive ears.