Board Thread:General Discussion/@comment-26189598-20150411152007/@comment-25365147-20150418234533

Great theory! Considering that Gems are functionally immortal (as in, they can't die of old age) a disease of some sort would explain why they might need to procreate on such a large scale.

Yeah, I think the Gem creation process probably requires biological life. There are so many lifeless planets out there that could be mined without a fuss, so why would they fight over Earth?