Can Opal, Sardonyx, and or Sugilite speak through Alexandrite.
Whoa! I’ve never thought of that! I suppose they could though keep in mind when individuals start speaking from within the fusion, it’s a sign of instability. So say if Pearl and Amethyst disagreed with Garnet, they could potentially speak as Opal. It’s easier though to think of fusions more simply as the sum of the parts composing them, rather than an amalgam of every possible combination within them. Great question!
Edit: Just to clarify a point, even if within Alexandrite, pearl and amethyst agreed and somehow spoke together as Opal, you would not hear her voice come out of Alexandrite. It would still only be Alexandrite’s voice, but speaking Opal’s opinion.