No. 2 diamonds both graded “excellent” might look very different from one another, even if they have the same characteristics in terms of carat weight, color and clarity.
Why? Because even perfectly cut diamonds can have different proportions. They will look different, but both perform equally well in terms of how much they will sparkle! Ultimately, it is up to you to decide which cut you prefer!
Look below: both diamonds have an excellent cut grade, same color, clarity and carat weight… and still look quite different. Which one would you choose?