Thread:LapisLazuliisthebest/@comment-35345181-20180414002428/@comment-31152477-20180414122406

I've done a theory on the Unknown Fusion in "Historical Friction". http://steven-universe.wikia.com/wiki/Thread:813553

The Quartz Gem in "Sworn to the Sword" is most likely a Homeworld Amethyst fusion. I also think the axe an helmet are two weapons summoned from different components.

All the others, I don't know and I'm not going through them all trying to guess what they are.