Mechanism of the deterioration phenomenon in pearls.

-The deterioration phenomenon of pearls which is caused by the denaturation of protain.

Abstract

Pearls have multilayer thin film structure which consists of calcium carbonate and a protein. The protain sheets play an important role in maintenance of the crystal layer. Pearls degrade with age by the wrong handling or state of preservation. We report the crack which are caused during processing among deterioration phenomena.