Wait when was it stated that the scepter was a gem ? Wasn't it just powered by the tesseract ?
It's never actually been stated that it's a gem. But it kinda looked that way when Von Strucker fondled over it in the Winter Soldier extra credits scene.
I thought that was just because it was powered by one of the gems
Oh yea. I wasn't saying the Sceptre itself is a gem. I was saying it was powered by a gem.