Some of those eye-popping designs are given below. Infinity Knot Diamond Ring In this design, an infinity symbol is flaunted on a ring in such a way that it is entangled using a knot. One of the stylish designs for an infinity knot ring features a baguette diamond at the center of an 18k rose gold band. Additionally, the main gemstone is flanked with infinity designs on either side that are embellished with melee diamonds. Love Knot Engagement Ring As the name indicates, a knot design that resembles a heart-like structure is displayed on a love knot diamond ring. For instance, consider a white gold band that is beautified using a love knot. Additionally, a small diamond is given at the center of the heart design. Trinity Knot Diamond Engagement Ring A trinity knot is one of the most unique diamond ring designs, which is associated with Christianity. There will be three knots in such designs and each element here represents Father, Son, and the Holy Spirit. Usually, this type of designs is seen in modern Celtic engagement rings.