so there would be no further need to continue on this path.

Words mean something specific. Cleavage planes are not flaws, and neither of them are what makes a diamond or any other stone sparkle.

Following a cleavage plane is how to SPLIT a diamond properly so the cutter doesn't accidentally destroy it trying to make the cuts necessary for the fire and sparkle.

Cleavage planes "decide" how large a finished cut diamond is going to be. Ignoring them is a recipe for ending up with a significantly defective pile of what will end up being much smaller specimens ruined by ignorance.