|Pregnant Rose Couldn't Fuse|
|Title||Pregnant Rose Couldn't Fuse|
|Date of Publication||February 6, 2016|
|Previous||All Gems Can't Fuse|
So, I think Rose, while pregnant, couldn't fuse with other Gems, because Steven wouldn't be possible. And no, Rainbow Quartz wasn't created while Rose was pregnant.
So, if Rose would fuse with another Gem while pregnant, the fusion would be half-pregnant. That wouldn't be possible. If Rose would've stood fused, Steven wouldn't appear.
So, leave some feedback in the comments!