Nice pearls, although I will say I'm no expert. To me the pearls we:
1) Silky smooth
2) Well formed (very round, not deformed), and of uniform size.
3) Exactly 18 inches
4) Shipped with a simple cardboard blue box with blue bag included, suitable box for giving as gift. Box is nice but not a lined jewelery box.
5) No certificate or documentation stating them as sea pearls or Akoya

I took a picture but not sure how to upload it.