I was able to get some bead nucleated CFWP, sizes range roughly from 9-11mm, shapes drop and oval to almost round. I smashed a couple of 11mm pearls (of course.. how else to know they really were bead nucleated lol) and found 6mm shell beads inside, so the nacre is pretty thick. None had the metallic lustre of the ones in Nerida's photo, more a soft glow to a high shine (ain't that technical lol). Colours were soft to strong (not many stronger colours) pale peach, pink and pale lilac, purple. Oh and white. The lady I buy from told me they call them Chinese South Sea Freshwater Pearls (though that doesn't really make sense it gets the idea accross).
I suppose I should find a photo.
They're lovely, not my personal favourites though; I like a bit more character. Still, iI had to see some in the real. I haven't seen any for a while, though that may mean nothing.