Mother of Pearl, also called nacre,is an iridescent layer of material that forms the lining of shells of molluscs such as Pearl Oysters and Abalone. It comes in several natural colurs and is sometimes dyed for decoration. The Dye retains the shimmering layers which makes Mother of Pearl so sought after. Every piece of material is strong, flexible and unique since it's formed in a natural process. Here at Poshcuffs we have lots of cufflinks based around Mother of Pearl.