Mother of Pearl (image) University of Rochester Share Print E-Mail Caption This abalone shell is a natural form of nacre -- also known as mother-of-pearl -- an exceptionally tough material found in shells and pearls. Rochester biologists have developed an innovative method for creating nacre in the lab -- and maybe on the moon. Credit University of Rochester photo / J. Adam Fenster Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.