I just wanted to relate my experience about the square brilliants.
Last month I ordered my first moissanite ever, it is an Amora square brilliant 1.1 ct (5.5mm). I debated on the size I wanted for a while before I ordered. I ended up ordering a smaller stone because I read that the bigger the stone, the more warmth it shows and I wasn't sure how I'd like a warmer stone.
When I got my ring the stone ended up being so much bigger than I imagined it would be
I did notice the X/flower within the cut of the stone but honestly, I don't see it 99% of the time when I'm wearing my ring. To me, it's part of the total sum of the stone. While it's not readily visible in its setting unless you are holding the ring at a certain angle in a certain light, it seems to play an important part in the depth of the stone.
I have noticed a buttery tone to my stone in certain lighting but not very often. Initially, I wasn't sure how I felt about it when I first noticed it but realized after a while that it is almost always white, and it is mega clear (the clarity is to die for). I've come to the conclusion that the touch of warmth that is hiding within it is a necessary component of its beauty just like the cut of it.
I absolutely love my ring, it has a personality all its own. It seems almost alive like a plant or something, lol. I have started to wonder, even panic, though, that once they stop amorizing the moissanites and go strictly with the new Amora stones if the uniqueness of the warmth combined with the amorizing will be lost forever
(Btw, I tried comparing my moissanite to a real diamond I have and quickly realized I love the moissanite for its own properties and uniqueness, kind of like my kids, lol)
Anyway, I realize each person has certain properties that they love/want the most about different stones but for me, I love my square brilliant. I almost ordered a square brilliant pendant but then thought that I wanted my ring to remain the totally unique piece of jewelry that it is.