You know, I am not sure if this has been asked before, but I haven't seen it. What kind of training do these girls undergo? I have seen a few videos that mention rather extensive training, but always in passing. From the speed I have seen sorting done, it must be almost instantaneous deteriminations. But I just wonder how each sorter is determined to adequately judge. And does one sorter sort all determining factors? I mean, are the pearls just all jumbled together and in an instant one sorter is able to jude luster, size, shape etc? Or is there a system, for example first they get sorted by size, then by shape then by luster, etc with a different sorter for each area? It is something I would love to watch in great detail someday. It just fascinates me.