A three stone ring, also called a trilogy or trinity ring, features three gemstones of similar or graduated sizes set in a row, symbolizing a couple's past, present, and future together.
This meaningful design typically features a larger center stone flanked by two smaller stones, though some designs use three stones of equal size. The side stones are usually the same shape as the center stone but can also be different shapes for contrast. Common combinations include a round center with tapered baguettes or a cushion center with half-moons.
Three stone rings have become increasingly popular as engagement rings and anniversary gifts due to their romantic symbolism and balanced design that showcases multiple diamonds.