>>78584174Based on what Jasper and Peridot have said, "The Guide to Crystal Gems" book, and also based on Pearl's flashback and the MASSIVE fusion-sized weapons they found from the strawberry field in Rose's Scabbard;
Fusion is a-ok for Homeworld as and only as a battle tactic, and within a gemtype, meaning gems of the same kind fusing into a giant gem of the same kind. For example the giant Amethyst (?) fighting Rose in the flashback.
However, Garnet-style fusion, where gems of different kinds morph into a 3rd, completely different gem, is frowned upon and seen as perverse. Especially when it's done for fun and not for necessity such as winning a fight.
