Mother of pearl, also known as nacre, is the iridescent inner layer of certain mollusk shells. Valued for its lustrous, shimmering quality, it is often used in jewelry, decorative inlays, and watch dials. Its unique composition provides durability alongside aesthetic appeal, making it a sought-after material for finely crafted items. The natural layers reflect light beautifully, offering a subtle play of color that enhances any accessory or ornament it adorns.