Our Infinity Love Knot Necklace with diamonds perfectly expresses the splendor of the infinity sign and the trinity or knot. Irish love knot. This gorgeous Celtic Infinity necklace with it's two toned gold and silver elegance, brilliant diamonds and sleek curves is a striking statement necklace. The trinity knots interlaced and unbroken lines symbolize spiritual growth, eternal life and undying love. When you give a Diamond Infinity Trinity necklace you pledge your infinite love and loyalty.