NEW YORK—Fine jewelry sparkled all over the New York runways, as designers showed their new spring looks with baubles and gems. Big diamond rings were a clear favorite, as well as cuff bracelets and multistrand necklaces. Lazaro Hernandez and Jack McCollough of Proenza Schouler, for example, used H. Stern’s South Sea and Tahitian pearls for their spring collection, the perfect complement to the duo’s preppy and athletic-inspired looks. Here, the pearls with a cardigan, top and shorts. For more on what shone on the runways, see photospread Razzle Dazzle’Em.