Metallic yarn is a type of yarn that contains metallic fibers, giving it a shiny and reflective quality. It is often used in knitting, crocheting, and weaving to add a decorative touch to various projects. The metallic fibers can be made from materials like polyester or nylon, and they come in various colors and thicknesses. This yarn is popular for creating festive items, such as holiday decorations and garments, as well as for embellishing accessories. While it can be more challenging to work with than traditional yarns, the unique sparkle it provides makes it a favorite among crafters looking to enhance their creations.