Which Small Detail Makes a Toi et Moi Ring More Beautiful?

Sometimes small details can completely change the look of a ring. I'm curious whether the setting, metal color, or diamond shape makes the biggest difference.

Check Out toi et moi rings:
https://www.antiquecut.com/col....lections/toi-et-moi-

When choosing a ring, which detail catches your attention first? I'd love to know what matters most to you.