In halo rings, the major gemstone is accentuated by a circle of smaller diamonds or other gemstones, and the effect of the design is to make the center stone look larger than what it actually is.

Charles and Colvard radiant cut halo 14k ring: $1,599. This captivating halo-style ring at Helzberg features a radiant-cut center Moissanite encircled by a halo of smaller diamonds.