Hard enamel pins, on the other hand, have a smooth, polished surface due to the application of multiple layers of enamel that are heated to high temperatures. This results in a more durable and long-lasting pin, with a high-quality, jewelry-like finish. Hard enamel pins are often referred to as cloisonné pins, as they use a similar production method to traditional Chinese cloisonné enamelwork. These pins are ideal for designs with bold colors and strong lines, and are a popular choice for collectible pins or high-end jewelry pieces. Although they are more expensive to produce than soft enamel pins, the premium finish and durability of hard enamel pins make them a worthwhile investment.