The perfect band width depends on your engagement ring's proportions and personal style. For delicate solitaire rings, a thin band (1.5-2mm) creates an elegant, streamlined look. If your engagement ring has a larger center stone or ornate details, a medium-width band (2-3mm) provides a nice balance without competing for attention.
Consider your finger size, too. Wider bands can make smaller fingers appear shorter, while thin bands might get lost on larger hands. When in doubt, try different widths together to see what feels right for you