Not pearls. Coral?
This is a pearl discussion forum; I have no expertise in coral. I suggest you post on Pricescope forum. Someone there may be able to help.
What a lovely necklace to inherit! It looks like baroque cultured akoya pearls.
If you want to wear it, I would definitely have it restrung first. Silk becomes weak over time and can break, which could lead to the loss of a pearl. Given that this is a 3 strand necklace that would be a real...
If it doesn't feel different than the rest of the surface, nacre did not come off there. Tahitian pearl nacre is thick.
I've never seen anything like that.
If these are pearls you just bought, consider returning them.
That first photo...could be naturally occurring blemishes.
But the 2nd photo looks like there is something lying atop the pearl. A bit of tissue maybe? Moisten it and see if it wipes off.
I had a large silver lobster claw and used 22 gauge Argentium wire to make the other part of the clasp.
I think if I ever need to restring them again, I'll use beading wire and silicone bumpers. I found I had to make knots of different sizes to compensate for how concave some of the pearls were...
The clasp broke the last time I took these lavender FWP off, so I had to restring them. I took the opportunity to rearrange them.
I used "Baby" Serafil 30#.
In what venue? At a show, perhaps that much. But if you are planning to sell them on eBay, first do a search for what similar rings sold for recently. EBay is flooded with inexpensive jewelry and much of the difficulty is getting anyone to even look at your listings. And if other sellers'...
1. Colors are wrong for Tahitians
2. too small for Tahitians
3. glossy sort of finish-- not pearl-looking
4. Not dyed freshwaters either, too long ago for that shape
5. Not typical color for dyed akoyas