Campbell is the petulant model who is most famous for her temper tantrums—throwing a phone at her maid, trashing her boyfriend’s yacht, ranting at British Airways staff for not having her luggage. The list goes on and on. She’s a nasty piece of work but I’d be surprised if she knew she was accepting a “blood diamond.”
I don't know if that's all true, but it gives the impression that although being given a diamond in NYC is a wonderful thing, the jet set crowd fully understands that receiving a diamond while in Africa is not without its problems.