Thank you, each of you for the comments and advice. I think they're really beautiful, not as pastel in real life but very eye catching. I'm not sure I'd ever have occasion to wear these in my every day life, but it's so fun playing with them and making them into something. Eventually, I'd love an Etsy shop like some of you have. I'm not fully prepared for that though so I'll just keep beading and setting things aside for now.
I smashed one of the pearls. It was SO hard, and thank goodness for the plastic baggie or I might have put an eye out with a nacre shard. Thank you pattye for sound advice! I didn't want to assume they were souffl? pearls. Aren't those really rare? They aren't souffl?s though. The one I broke was a 15mm coin pearl fused to an 11mm round pearl (both nucleated), and you could tell that's what they were going to be just by looking at them. I don't know what the beads are made of. I didn't want to pound that hard on the hearth inside so I haven't broken one yet. The section of nacre stretched between them was a bit long and tubular and it was hollow. So there were two pearls fused by a hollow section. Some of the others must have hollow sections too. I'll have to take some photos, but it won't be until the weekend. Mystery of the goldfish pearls solved!