If you mean naval jewellery.. I wouldn't, it's a lot thicker than a normal earring and it could weight it down a lot which would make it hurt!

Ramona is right, but if it's a 14 ga navel jewelry and you have a 14 ga. Hole in your ear, it will fit. Cartilage is really tough and painful to stretch though too, keep that in mind if you have a 20 ga. In your ear and a 6 ga. Belly ring.