Well, I don't see any blemishes; they don't look like freshwater to me. Every single pearl has exactly the same reflection, roundness, the same color; to my eyes, which I interpret as a sign of imitation pearls. Of course, one photo cannot tell the whole story. Do you mind telling us the price range being asked for these pearls?
We are often asked to evaluate a seller, by looking at all their offerings, to see if their descriptions are accurate, their return policy, all important factors when considering a purchase.