Smoother Than Square, It's the Rectangle. When he's literally too hip to be square and is looking for cufflinks and lapel pins that have a longer, bolder shape, Jan Leslie's collection of rectangular designs is ideal. Sterling silver, gemstone and enamel rectangular cufflinks in both traditional shapes and enhanced with faceted, curved or domed edges. Pair them with a rectangular lapel pin for a sleek geometrical accent to any look.