A sequin /ˈsiːkwɪn/ is a disk-shaped bead used for decorative purposes. In earlier centuries, they were made from shiny metals. Today, sequins are most often made from plastic. They are available in a wide variety of colors and geometrical shapes. Sequins are commonly used on clothing, jewelry, bags, shoes and many other accessories.
Sequins are sometimes also referred to as spangles, paillettes, or diamantes, but technically differ.In costuming, sequins have a center hole, while spangles have the hole located at the top. Paillettes are commonly very large and flat. Sequins may be stitched flat to the fabric, so that they do not move, and are less likely to fall off; or they may be stitched at only one point, so that they dangle and move easily, to catch more light. Some sequins are made with multiple facets, to increase their reflective ability.