Board Thread:General Discussion/@comment-3123266-20140303175822/@comment-2090489-20140425145539

Well the orb and the tesseract are just shells for the real gem I think. The purist form of the gem would look like the glowing stone on Loki's scepter. Speaking of Loki's scepter, Kevin Feige recently came out and confirmed that Quicksilver and Scarlett Witch's powers came from the scepter. It's good to be right! :)