This isn't about the disney pearl, but the wish pearls in the little cages. They're cute, and good for kids. But we had a problem with ours.
We bought one for my daughter a few weeks ago. When we got home and opened the can, the pearl was too big to fit in the little cage and close properly.
We ended up taking the clasp off an old piece of costume jewelry and closing it over the place where it was supposed to close. In retrospect, I suppose we could have tied it shut with a piece of thread, easier. (We first tried using a link that was the same color as the necklace, and using tweezers to tighten it around, but we couldn't quite get an angle on it. Yanking the clasp seemed the next natural step.)
I'm still a little worried the pearl will work its way out. But you can't see our little surgery unless you look closely, and it seems stable.
I kind of wish we had opened the jar when on the ship. Then we could have exchanged it for a new one if it didn't work.