The bottom two look like abraders. Better pics of the drilled holes and the top rightmost piece would help. That's the only one of it's shape I recognize that may be a pendant. I don't have such good feelings about the rest. They don't appear to be utilitarian nor adornments and made from incised rock or stamped pottery(?). My $.02 worth.
If the one at the top left is pottery, it's probably authentic. The plain one needs close-ups of the hole drilled in it. The two abraders are probably OK. The face and the fish are garbage.