Board Thread:General Discussion/@comment-24537027-20140919193638/@comment-26812261-20140921133558

Imtheaura wrote: But what about the other crystal gems? where did they all go?

im wondering if there was something that killed them off...

Looking at the similarities between the Centipeetle Mother's regeneration and Pearl's, it's possible that the monsters they fight are all former gems.

Additionally, Pearl mentioned in Cheeseburger Backpack that the Sea Spire was once a hub for gems on earth, meaning it's possible that there are other gems out there who simply protect other planets/civilizations.