In this type of designs, the main gemstone is surrounded by a halo of melee diamonds in order to lift up the overall size as well as the look of the sparkler. History The origin of halo cut diamond rings is believed to be in the early 1700’s. However, a simpler and streamlined version of halo diamond rings was first introduced during the Art Deco period. During then, may filigree and milgrain works were also used along with the halo in order to enhance the overall style. Benefits The main advantage of using halo cut diamond rings is to boost up the overall bling factor of your ring, and to make the gemstone look bigger than its actual carat weight. Some of the other benefits of this setting are given below.