From top to bottom of earring:

Post: 3 1/4 inches

3 heart hook: 4 1/5 

1 heart hook: 1 3/4 in.

• Keep away from direct sunlight and extreme temperatures
• Hand wash with mild soap; keep away from harsh chemicals as this could ruin the finish
• Do not soak or submerge under water
• Remove jewelry before sleeping or bathing/showering