A class ring (also known as a graduation, graduate, senior, or grad ring) is a ring worn by students and alumni to commemorate their graduation, generally for a high school, college, or university.Today class rings can be customized, from the material and style that the ring is made of to the color and cut of the gem in the center. There is a wide selection of emblems, pictures, and words that can be added to the sides of the rings and even inside the center gem.