What cut of diamond holds the most value?

I'm curious, in the world of precious stones, what specific cut of diamond holds the most value? Is it the iconic round brilliant, known for its exceptional brilliance and fire? Or perhaps the elegant emerald cut, prized for its elongated shape and step-cut facets? Could it be the unique princess cut, a modern classic with its square shape and pyramid-like facets? Or might there be another, lesser-known cut that truly surpasses them all in terms of rarity and desirability? I'm eager to learn more about the intricacies of diamond valuation and how different cuts factor into this complex equation.