I don't know. I got a few pairs of these a few years ago and I don't remember...sorry. They aren't perfectly round and some look like they have layers like a real one would be, but I'd hate to even guess. Thanks for asking and Good Luck Bidding.
They look like freshwater pearls to me, I have some beads listed this week that look just like these. My daughter wanted a pair of pearl stud earrings, so these are perfect!
I think you're right. I kinda remember that now. Your daughter will love them. All three colors are gorgeous! Thanks for commenting and Good Luck Bidding!