Design an elegant and detailed heart earring to be created using 3D printing. The heart should have an intricate design, with fine details that highlight the beauty of love. Consider incorporating delicate engravings, filigrees, or geometric patterns that add sophistication to the design. Also, make sure the earring is comfortable to wear, with a secure but aesthetic closure. You can play with the texture and finish of the material to give it a unique touch. Imagine an earring that captures the essence of romance and elegance, ready to be materialized in three dimensions!