I just found out some really cool info. You will never look at one scene in Dead Man's Chest the same way ever again. That purpule ring that Jack stole from Tia Dalma was Angelica's at the start. There was a scene that did not make it into On Stranger Tides and that's when Jack gives Angelica back the ring. Here is the whole story behind the ring.
When Jack and Angelica first got togather Jack got Angelica a ring. [the purpule ring, it's called the Ring of Thieves] Later Jack and Angelica broke up.[everyone knows that] Jack and Angelica met up and broke up between Pirates 1 and 2.[that's why Jack was having a "hard" time with his compass in Prates 2.] Before Jack went to Tia Dalma in Pirates 2, Angelica went there to find out the rules for the Fountain of Youth. She gave the Ring of Thieves to Tia Dalma as payment. When Jack went to Tia Dalma in Pirates 2 he saw the ring on the tabel and took it.
In On Stranger Tides there was a scene that was suppose to take place, but did not make the finale cut. However I manged to get the script. Oh Yeah.
Jack- "I have something for you. Proof, you are never far from my thoughts. The first item I ever stole...from someone else."
Angelica-"I had to trade it. To learn the rules for the Fountain."
Watch everyone know this already and I just found out.