Board Thread:General Discussion/@comment-238662-20140606160839/@comment-24757127-20140806072130

Chase5893 wrote: Unless i'm missing something, nowhere in the movie does anyone state that the scepter is powered by the tesseract. steve states only that it works a lot like it, and Thanos was the one who gave the scepter to loki and Thanos never had the tesseract in the first place. You are right, I was going of of what Loki said about the sceptre. The two look similar.

It could be another stone, but I doubt it. It would be weird. A future movie would be "oh ya Loki's sceptre from when he invaded New York had a infinity stone in it and we didn't know then." They knew the Tesseract was extremely powerful and in Thor The Dark World we find out that it's one of the gems. No mention of the sceptre.