Mother-of-pearl is the hard, silvery, internal layer of several kinds of shells, especially oysters, the large varieties of which in the Indian Seas secrete this coat of sufficient thickness to ...

In Egypt, decorative mother-of-pearl was used at least as far back as 4200 B.C., but the use of pearls themselves seems to have been later, perhaps related to the Persian conquest in the fifth ...

This creates a material called nacre, also known as mother-of-pearl, which encases the irritant and protects the mollusc from it. When pearls are cultured commercially an irritant is manually inserted ...