Glossary of Terms

  • Nacre

    A calcium carbonate-based crystalline substance secreted by mollusks to form mother-of-pearl, pearls, and cultured pearls. Nacre secretion by a mollusk is usually a defense mechanism triggered by the intrusion of a foreign object into the body of an oyster.

  • Natural Pearl

    A natural pearl (also called a genuine pearl) is a pearl produced in an oyster, mussel or other mollusk as a reaction to a tiny invading object becoming embedded in the organism. Over a period of years, layers of nacre, a crystalline substance, are secreted to coat the foreign particle.

  • Necklace

    Ornamental chain or string of beads, jewels, or links worn around the neck.

  • Nickel Silver

    A silver-white alloy containing copper and zinc and nickel.

  • Noble Metals

    Metals that are relatively impervious to chemical reaction (less prone to tarnish or rust). These include gold, silver and platinum.

  • Non-Luminous

    Not capable of producing light, but can be capable of reflecting light from another source.

  • Notched

    A “V” shaped cut or indentation in an object.

  • Nucleation

    The process of nucleating a mollusk to produce a pearl. Also called grafting or implantation, nucleation requires the insertion of either a hard bead nucleus or soft mantle tissue between the body of a mollusk and its shell or into the mantle tissue of a mollusk. The hard bead nucleus or soft mantle tissue serves as a "seed" or "irritant" to produce a cultured pearl.

Chains True Origin