Board Thread:General Discussion/@comment-26625283-20150710031838/@comment-26814577-20150724091922

Garnet said in order to fuse you need a gem at the core of you're being which Steven has. Then Garnet said you need a body that can turn into light. Steven doesn't really turn into light, light shines from his gem and then he fuses with connie to be stevonnie.

Half Human: Fuse with humans

Half Gem: No light to phase into another gem, so can't fuse with other gems