Riley let me start off by saying I love your nails:).

Now you may want to check the roots of that little Lithops to see if everything is ok. I don't want to be a Debbie downer, but it looks like one of the older leaves may have rotted away. If not sure take a pic and somebody will be able to tell what's going on:).

Thanks Kara :)

I'll take it out of the pot as soon as possible and check the roots. I didn't even think that the old leave had rotted. I just assumed they dry up. Thanks for the advice