nacre

Mother-of-pearl.

Having an iridescence resembling that of mother-of-pearl; nacreous: a French word applied in English to decorative objects: as, nacré porcelain.

A pearly substance which lines the interior of many shells, and is most perfect in the mother-of-pearl.

Having the peculiar iridescence of nacre, or mother-of-pearl, or an iridescence resembling it.

the iridescent internal layer of a mollusk shell