A halo changes the face-up view
A traditional halo surrounds the center diamond with visible accent stones. It can increase visual presence and add sparkle from above, but its proportions should complement rather than crowd the center stone.
A hidden halo changes the side view
A hidden halo places accent diamonds beneath the center stone. From above the center remains visually dominant, while the profile gains detail and light when the ring moves.
Maintenance and wedding-band fit matter
Both designs add small stones and setting work. Ask about basket height, cleaning access, prong protection, and whether a straight wedding band will sit flush or require a contour.