Mother of pearl is a lustrous, iridescent substance that forms the inner lining of the shells of certain mollusks, such as oysters and abalone. It is composed of calcium carbonate and conchiolin, a protein that gives it strength and flexibility. The size of the mother of pearl can vary, but the given size range of 15 to 30 mm is relatively small. The shape is described as mixed, meaning it may include various irregular shapes or a combination of different shapes. Mother of pearl is often used in jewelry and decorative objects for its beautiful shimmering appearance.
