Board Thread:General Discussion/@comment-26378797-20150507232005/@comment-26378797-20150507234644

ThePhilosophunculist wrote: Sorry kiddo but Greg isn't a gem whatsoever. Your theory can't be discounted simply with how Greg ages and later has a child with Rose, something gems can't do. 1) Rose was able to shapshift a full uterus to give birth in the first place. H could have shapeshifted the needed part.  If Rose can do it, others can. It might just be something fairly hard, or even disgusting to them.

2) The crystal gems brought up the aging thing in one of the episodes, although I do not remember which...(I think...) They do not age, but they can if they so choose...Examplr: Amethyst 'grew up's.