I know this may sound crazy but just listen.
In order to summon Garnet's room, her gems, Ruby and Sapphire have to activate to open the door.
Which leads us to wonder? Can all of the fusions enter a whole different room?
So if Ruby and Sapphire were seperated, would they share the Garnet room or have two completely different rooms.
And rooms could fuse, what would the other Crystal Gem fusions' (Opal, Sardonyx, Sugilite, Alexandrite, Rainbow Quartz, etc.) rooms look like?