Pearl identification help


Mar 28, 2023
Hi, I have been learning a lot about pearls but am not an expert, and am hoping for confirmation or correction about two strands. I’d really appreciate help with the following:
-The first I purchased recently from a local auction and I believe it is dyed black freshwater. See pic below.
What type of black pearls do I have?

-The second was a gift from maybe ten years ago and I think it too is freshwater but not dyed.
What type of pearls are these?

Thank you for any insight!
Yes, they are both freshwater pearls, and the black ones are dyed. The dye is stable.

They don't have a bead nucleus, which is why they have an eggy shape. Being solid nacre, they are quite durable! You should get lots of wear out of them!