Talk:Marble Madness/@comment-1944542-20150826030206/@comment-508329-20150921123324

Additional evidence:
 * In Cry for Help, Peridot refers to Earth as an abandoned colony planet.
 * In Keeping It Together, Garnet says "these were Crystal Gems", which seems to indicate that they were already calling themselves that during the war, but in Marble Madness, when Steven mentions the Crystal Gems, Peridot acts like she's never heard of them.