What Is This TV Show?
It was made a few years ago, set in Australia and revolved around a weird star shaped pearl. I think the pearl was called the ocean star. There was a shipwreck in it that happened a few years before the show was set. In one scene I remember someone was diving and they got the bends. Also there was a stuck up girl who wanted the pearl made into earings or something. Cheers 
I think the name of the show is "Ocean Star".