Delight Small Crystal Heart with Nurse Hat - Clear Crystal Post Earrings Silver Tone Small Crystal Heart with Nurse Hat Crystal Post Earrings. Charm size is approx. 0.59 x 0.7 x 0.1 inches (HxWxD) including loop. Earring Crystal is 3.3mm. Earrings have steel posts. Earring backs are Bullet ''Clutch'' Style with Plastic Pad. Earring crystal colors available: Maroon, Red, Orange, Yellow, Lime Green, Green, Teal, Hot Blue, Blue, Purple, Light Purple, Light Pink, Hot Pink, Black, Clear, and Brown.