C. 1980. Joining our Estate collection from New York-based designer Kiesselstein-Cord, these earrings will bring a unique, yet luxurious, pr… C. 1980. Joining our Estate collection from New York-based designer Kiesselstein-Cord, these earrings will bring a unique, yet luxurious, presence to any of your formal ensembles. Features eye-catching swirl designs of 18kt yellow gold sparked with twinkling .90 ct. t.w. round brilliant-cut diamond stripes. Clip/post, Kiesselstein-Cord diamond swirl earrings. Exclusive, one-of-a-kind Estate Jewelry.