Mother-of-pearl

Nacre , also called "mother of pearl" , is a hard, shiny, iridescent substance produced by certain mollusks, notably pearl oysters and abalone. It lines the inside of their shells and is also the material of natural pearls.

✨ Composition and training

Mother-of-pearl is mainly composed of:

  • Aragonite crystals (a form of calcium carbonate – CaCO₃)

  • Conchiolin , an organic protein that acts as a binder between crystals

These components are organized into very thin microscopic layers. Light diffracts through these layers, producing the characteristic iridescent effect of mother-of-pearl.

🐚 Role for the mollusk

  • Protection : Mother-of-pearl protects the mollusk's soft tissues from parasites and debris.

  • Defense reaction : When a foreign body penetrates the shell, the mollusk coats it with nacre — this is how a pearl is born.

💍 Human uses

  • Jewelry : pearls, pendants, earrings…

  • Crafts and decoration : inlays in furniture, watches, buttons, musical instruments, etc.

  • Lutherie : for neck markers on guitars or violins.

🎨 Aesthetic aspect

Mother-of-pearl is prized for:

  • Its soft, iridescent shine

  • Its color palette : white, pink, gray, blue, green depending on the origin and thickness of the layers

  • Its natural and refined appearance

🌍 Geographical origins

The main sources of mother-of-pearl come from:

  • The Indian Ocean and the South Pacific (Polynesia, Japan, Indonesia)

  • Certain tropical and temperate waters where pearl oysters live

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List of Stones & Minerals

Mother-of-pearl is the interior coating of certain mollusk shells, composed of aragonite and conchiolin crystals, with iridescent reflections. It has long been a sought-after product for decoration, marquetry, jewelry or button making, to the point that certain shells such as abalone have locally disappeared. Some are bred for mother-of-pearl. Mother-of-pearl resists acids better than the shell and reconstitutes itself when it is pierced or damaged in living shells.

Astrological signs : All.

Chakra : 3rd eye.