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

Confirmed:
 * Space Stone: Tesseract
 * Power Stone: The Orb

Speculation:
 * Reality Stone: Aether. A lot of people thought it was Power until recent reports for Guardians of the Galaxy confirmed that the Orb was in fact the Power Stone, that makes Reality the next most logical choice as Malekith wanted to use the Stone to alter reality, reverting the Universe back to darkness.
 * Mind Stone: Chitauri Sceptre. We don't even know if this one is an Infinity Stone but it controls minds, so... Mind Stone.

That leaves the Time and the Soul Stones. Do you think we've already seen them in the MCU or are they going to show up in other films? 