Sequin fabric is a type of fabric covered with plastic or metal shaped pieces. It is also commonly referred to as 'sequence fabric', though the only correct term is 'sequin'. Sequins vary in size, shape and color. They can be glossy or matt, reversible or one-side. equins are nasty little buggers that will dull any blade. So, use an old pair of scissors to cut the fabric and definitely don't use your serger. On the advice of “Sequin” originated from the Arabic word sikka, meaning “coin,” later becoming the Venetian word zecchino. In the late 16th century, it morphed into the French word, sequin. Formal gowns and suits were embellished with polished disks of metal throughout history, requiring hours of hand sewing by seamstresses.