Has anyone ever bought from a South African Wholesaler? We have friends of friends who have " diamond'' parties with a SA Wholesaler selling his wares. They have gotten some pretty unbelievable prices.. Of course having them apprasied immediatly afterwards. I am still skeptical.. when it seems to good to be true.. it usually is.. but so far all diamonds purchased have come out at the very LEAST what they were selling as.. some higher! And my one friend took his diamond to not 1 but 3 reputable independant appraisers! Just wondering if anyone else has purchased a sizeable diamond this way?????