A round three stone engagement ring, also known as a trilogy or trinity ring, features a round-shaped centre stone flanked by two smaller round stones on either side. This design is rich in symbolism, with each stone representing the past, present, and future of a couple's relationship. The round shape of the stones in a round three stone engagement ring offers a classic and timeless look. Round stones are known for their exceptional brilliance and ability to reflect light, creating a dazzling display of sparkle.