Like the naturalness of the first, but theres something about the second... like the compact look of the moss. Looks like its just had a trim?
But I guess natural is what we're all aiming for
That is Pagoda stone, awesome for Iwagumi.... for anything.
They're very similar but I don't think the elephant skin has the burnt orange, copper type veining that pagoda stone has.
Also, the cracks in elephant skin are usually deeper and a little more uniform.
I could be wrong though... A MA store I go to keeps them both in the same basket. Nightmare trying to get pieces the same.