Silvertone Mini Nurse Hat Open Heart - Stud Earrings (1 Pair) Nurse Hat Open Heart - Stud Earrings (1 Pair) Nurse Heart is approximately 0.34 x 0.43 inches (HxW). Earring backs are Bullet "Clutch" Style with Plastic Pads. Silver Tone Earrings have a steel post soldered onto the back. Makes a wonderful nurse gift.