The halo setting is a ring of small accent stones, typically pave diamonds, that encircle a larger center stone. Halo settings can be the same shape as the center stone, or they can be different, such as a cushion-cut halo circling a round diamond. A halo ring is a style of engagement ring that uses small diamonds around a center diamond, and then the surrounding diamonds emit light. Accordingly, a halo ring is one of the most popular engagement ring styles.*