The wrinkled one looks like it's growing a new set of leaves. So the new set of leaves will absorb the old outer leaves. Make sure you don't water these little guys or else you will get lithops jelly ;) I have a few and I water them maybe 3 or 4 times a year. I wait for them to tell me when it's time for a drink they get wrinkly when thirsty. Lastly, soil should be changed to a fast draining type of soil. Here's a pic of mine as you can see the one on the right is almost at the end of reabsorbing its leaves :)

You picked up more difficult one to start, lol.

They are very interesting plants, but need little bit of special care - pls. search this site, there are many threads about growing lithops (I can't advise...). Watering them at 'the wrong time' is sure death sentence.

Looks like they're doing just fine! Eventually they will need to be watered, but all three need to be much much more wrinkly before that.

I agree that some extra reading and effort for making a good soil mix with low water retention is a good thing for the future. =)

For sure! I did a bit of reading, but I wasn't sure if that turgid was turgid-enough, or not enough... or if the wrinkled one needed watering. I'll do some more reading, and change the plant soil asap. Thank you for all the help Kara, Rina, and Ewwmayo! :D