I was always wondering: (How to make that Diamond Gen? Just how??) and i came here from PrestonPlayz cuz' i saw server name. So someone can say how to make it? pls.
EDIT: I am currently searching for Gen Tut
I suppose you mean something like this (diamond form, and working ofc):
This is an eggwars plugin, and im quite sure its specifically made for cubecraft, and not found 1, 2, 3 on the internet.
(In case you dont know what plugins are, its like a mod, but then for a server so that players dont have to download anything.)
This means that these are impossible to make in 'original minecraft', without using some kind of cheat, mod, or command line.
EDIT: Apperently
@hgbf is trying to make you a command that will let you have these generators in your world. GL w/ that ;)