Stud earrings are very popular because they are easy to wear and have a minimal design. When looking at them you only see diamond. Usually studs are made of one stone but more and more people are choosing the halo stud option, which is a single stone surrounded by many smaller diamonds creating a halo effect. Usually the design is a round center stone surrounded by smaller round stones. Sometimes it can be a princess stone in the center or other shapes but most of the time the surrounding smaller diamonds are always rounds stones. With the halo stud there is much more refraction of light and the studs sparkle much more from the smaller diamonds around the main stone.