Board Thread:General Discussion/@comment-10529169-20150426213858/@comment-13044010-20150427002130

Maybe since gems (as far as we know) cannot naturally reproduce without gemstones, they are using Kindergartens to keep their species alive, as when a gem is crushed or corrupted, it can't be healed (Again, at least as far as we know). This would lead to the need to seek out more gemstones, to keep the population steady. Of course, this isn't tackling the root of the issue (gems destroying each other/getting corrupted) but it is a solution, or at least until the run out of planets to hollow out.