Diamond Love Knot Earrings in Two-Tone 18k Gold over Sterling Silver. Fall in love with these love knots! The never-ending twists of 18k gold overlay glisten with silvery faux pavÌ© and a diamond accent. A petite, romantic look!!  Two 1.0mm genuine round cut white diamonds. Two tone 18k gold overlay* on sterling silver setting and post * Superior to mere traditional plating, an 18k gold overlay provides the quality look, feel and durability of gold.