Board Thread:General Discussion/@comment-24423830-20150324223454/@comment-26205636-20150324235927

Easy, the voice actresses were not available at the time to record for the show. J/K,  Opal was used because she has longer range capabilities than Sugilite and presumably Alexandrite. Garnet was then taken out before another fusion could be tried. I also think it has to do with stability, Sugilite could have destroyed Jasper, Peridot, Peridot's ship, Beach City, the temple then the ruins of Ocean Town (In short, she's very volatile and you don't know what you will get). Alexandrite, I imagine, is like a rocket, they are only effective with a set, single, straight forward goal shared by all 3 that does not allow for any deviation from their goal.