Marquise Cut Audrey Perfect Fit Hidden Halo Diamond Engagement Ring - 18K Yellow Gold. Designed so wedding rings will sit perfectly flush against its band, this engagement ring boasts a classic look completed by sleek, modern claw prongs. A hidden halo of diamonds adorns the gallery wire for extra sparkle. Our perfect fit engagement rings are carefully designed to sit flush against a variety of wedding rings for a seamless look with no gaps.