Pearl secretion spherical solid is formed inside the shell of some types of mollusks and oysters and classified gems.
Secrete the substance of epithelial cells (in the fold or in clove or cloves in the wall lining of the conch in molluscs), a fabric Staúra between the accident and the body, and is secreted in successive layers around annoying body usually parasites in the case of natural pearls hanging in the soft tissue of the oyster · Pearl built from layers of Alerjohnat or calcite (carbonate Alcaliswm crystalline) and stuck to each other textured layers conchiolin (horny solid organic material crusty) and installed similar to the installation of pearl sweat that forms the inner layer of the Clamshell ·
Pearl contract
Solid soft iris color make up the lining of some of the shells used in the manufacture of buttons and ornaments ·
