We do not know. That is a mystery we have yet to solve, and will doubtless remain so for quite some time.

[A deep sigh.]

To most, the chance to go back home is considered reward enough. Right now the only way to do so is if Davy Jones sends us back on a whim, and there is no guarantee he will ever do so with some of us. The power of the jewel is widely believed, but not guaranteed, to be able to send us back as well.

Many islands here are heavy in riches, magic and beautiful sights, however.