So I'm watching the episode Expose' last night and I wondered if good old Sun didn't help herself to some of Nikki and Paulo's diamonds. There was quite a pile in her hand when she poored them out, and when Sawyer threw them in the grave, it looked like Sun had kept at least half the diamonds. (that would have been at least $4 million)

She would then have her settlement (and Jin's?) and the diamond money.