She killed Pink diamond. It's pretty obvious now. But, why she did it is still a bit confusing. My thought is she wanted earth to use for building armies and colonies that would destroy the earth and Pink diamond did not agree and since it was her planet
Steven universe "Wanted" "The Trial" After seeing this episode, I am sure that yellow shattered pink. It obviously couldn’t have been Rose, if her sword could only damage the body, not the gem, as Bismuth said.