Quote Originally Posted by Shiny View Post
Did someone already say Yellow Element?
No, and it isn't.

Quote Originally Posted by hplvr View Post
Blue Element
Nope.

Quote Originally Posted by Sain Cai View Post
Gold Element, since gold is an earthy mineralish thingy
Good guess, but no.

Quote Originally Posted by Firo Volondé View Post
White Element is the only one left.
Nope.

Quote Originally Posted by Enjolras View Post
Great, now we're just gonna guess through the elementals.
I'll say Black Element.
We have a winner!

Carbon is an element and often is black in its elemental state. So the Black Element could be made of carbon.