In case you’re trying to keep track of the Infinity Gems;
- Kevin Feige (President of Marvel Studios) stated that the Tessaract seen in The Avengers and Thor was actually an Infinity Gem, specifically the Space Gem.
- The Aether seen in Thor: The Dark World is also one, although it’s yet to be confirmed exactly which one. Personally, I think it fits into the Reality Gem's power area.
- Loki’s Staff, seen in Avengers, Thor, etc appears to have a gem. In Captain America: The Winter Soldier, a scene in the credits shows it being un-assembled digitally, possibly alluding to the gem in it being a Infinity Gem. I’d say it’d be the Mind Gem.
- In Guardians of the Galaxy, the “Orb” item that Peter steals houses a purple gem, said to be the Power Gem by Feige.
That leaves us with just two; the Time Gem and the Soul Gem.