Board Thread:General Discussion/@comment-26082492-20150215114919

If the Crystal Gem's missions they often warp to are all in locations on Earth and, according to Pearl, the Lunar Sea Spire not being in as good condition as it was "a hundred years ago" in the "Cheeseburger Backpack" episode, then how long have the Gems being on Earth?

I can't help to expand on the matter and ask how long was Earth controlled by the Gems before Rose and the others cut off homeworld's access to Earth? 