Mother-of-pearl is formed by molluscs. It coats the inner surface of the shell to defend the mollusc against parasites.

Mother-of-pearl is naturally black or white with touches of brown, but may be dyed to any colour. It is iridescent and absolutely beautiful when carved with a design such as flower or leaf and used as a focal piece in jewellery.

Believed to be a protective stone, mother-of-pearl is also thought to enhance intuition and adaptability and help with decision making.