The oyster or mussel slowly secretes layers of aragonite and conchiolin, materials that also make up its shell. This creates a material called nacre, also known as mother-of-pearl, which encases the ...

The all-nacre Biwa pearls formed in colors unseen ... they now offer a selection of subtle natural colors. Nucleating an oyster. The Chinese have also begun to nucleate some of their freshwater ...

By secreting layers of aragonite and conchiolin, the same substances that are in its calcium carbonate shell, the mollusc creates a material called nacre, commonly known as mother-of-pearl. The oyster ...

This triggers the oyster's defense response, and it starts coating that piece of tissue with nacre. The vast majority of pearls on the market are cultured pearls. The Gemological Institute of ...

Pearls form when a foreign substance, such as a grain of sand or a parasitic organism, enters the oyster and irritates its mantle. In response, the mantle secretes layers of nacre, the same ...