Davy Jones has a pawn shop down there
one word "senile" =I
she is throwing her 'sexuality' (her Jewel) to Jack in an ex<x>pression of loyalty and love
I just thought it was stupid!!
nothing, she was insane.
She didn't want to live of Cal's money. It was her way of letting go and keeping her promise to Jack.
It was closure for her...and it was where it belonged
who cares, its a movie
She sent it down to where it belonged. With the expiriances on the ship. And the dreams she had! In her view thats where it belonged!
I mean the jewel was called 'The Heart of the Ocean'. I mean the theories about this are scattered. She was sort of a wild spirit while younger. I sort of believe that because Jack made her promise her to live 'selfishly' that she kept that necklace, (Until she absolutely knew she was going to pass away in the night, how convenient she was over the Titanic when she did.) throwing it over the railing so that Jack would know she lived how she promised she would. Regardless if The Heart of the Ocean was found by the 'treasure hunters.'
I know right?? xD
It was a sacrifice to Poseidon, by which she survived while abandoning her one true love (that guy she's just met and ******** for--you know how deep those relationships are)
To part ways with her old life and leave it there so researchers can find it later and fight over it's value.