User blog comment:CrazyForLapidot/Peridot's New Crystal Gem Outfit Conversation. (My thoughts on the matter)/@comment-26468465-20160530153748/@comment-26468465-20160530175814

Well,

---WARNING: SPOILERS FROM STEVEN FLOATS ARE CONTAINED IN THIS MESSAGE! CONTINUE READING AT OWN RISK!---

When Steven and the Gems warp home, Peridot isn't even there. She just lives at the barn with Lapis, so she isn't really a Crystal Gem and probably won't even go on missions with them.