Blue diamond: When Ruby and Sapphire fused Blue Diamond was not happy, she even wanted shattering to be enforced apon Ruby
Jasper: Jasper also doensn't like fusion (i think) as she says "fusion is just a cheap tatic to make weak gems stronger"
Homeworld gems in The Answer: They had a suprised "youshouldnotbedoingthat" expression as they towered over Ruby and Saphhire after they fused.
Peridot: She doesn't mind fusion unless they are fused for no reason but she's gotten use to it.
I think that fusion is dissed upon because the diamonds don't want any other gems to fuse and over power them and try to shatter them. I think that long, long ago when Pink Diamond was still in the authority fusion was allowed and Rubys were in the ground for the righ…
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