Penny, I see what you mean, they dont look like identicle twins even though they look related lets see who has the answer to this one.

Could just be the lighting they both had and one had some lava rock in the soil ?
I'll keep my eye out for the answer.

Greg

Penny,

If we're drawing conclusions from just leaf morphology, I'd say 'Debbie' is on the left. On the right is a plant I'd guess has some Pachyphytum in it, so that would eliminate it from contention.

I don't see any cresting going on, but I'd say, too, that the left looks more to me like the plant in question. Both quite pretty.