Organic-inorganic composite material produced by some molluscs
"Mother of pearl" redirects here. For other uses, see Mother of pearl (disambiguation).
For the cloud formation, see polar stratospheric cloud.
The iridescent nacre inside a nautilus shellNacreous shell worked into a decorative object
Nacre (/ˈneɪkər/NAY-kər, also /ˈnækrə/NAK-rə),[1] also known as mother of pearl, is an organic–inorganic composite material produced by some molluscs as an inner shell layer. It is also the material of which pearls are composed. It is strong, resilient, and iridescent.
Nacre is found in some of the most ancient lineages of bivalves, gastropods, and cephalopods. However, the inner layer in the great majority of mollusc shells is porcellaneous, not nacreous, and this usually results in a non-iridescent shine, or more rarely in non-nacreous iridescence such as flame structure as is found in conch pearls.
The outer layer of cultured pearls and the inside layer of pearl oyster and freshwater pearl mussel shells are made of nacre. Other mollusc families that have a nacreous inner shell layer include marine gastropods such as the Haliotidae, the Trochidae and the Turbinidae.
Nacre (/ˈneɪkər/ NAY-kər, also /ˈnækrə/ NAK-rə), also known as mother of pearl, is an organic–inorganic composite material produced by some molluscs as...
of molluskan bivalves or clams. A nacreous pearl is made from layers of nacre, by the same living process as is used in the secretion of the mother of...
a protein responsible for the elasticity of organic layers that makes nacre so resistant to cracking. Lustrin A bears remarkable structural similarity...
garments. Mirror a type of exceptionally soft and light crushed velvet. Nacré velvet with an effect similar to shot silk where the pile is woven in one...
seen in all structural materials in biology such as bone and nacre from seashells Nacre has several hierarchical structural levels. Some mollusc shells...
Yaochidao (瑤池道 "Way of the Mother-of-Pearl Lake"), also known by the name of its corporate form the Holy Church of the Mother-of-Pearl Lake, Taiwan Yauchi...
the shell's outer edge. The thick inner layer of the shell is composed of nacre, which in many species is highly iridescent, giving rise to a range of strong...
bivalve or gastropod. In response, the mantle tissue of the mollusk secretes nacre into the pearl sac, a cyst that forms during the healing process. Chemically...
Pteriidae. These pearl oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl". Pearl oysters are not closely related...
iridescence include soap bubbles, feathers, butterfly wings and seashell nacre, and minerals such as opal. Pearlescence is a related effect where some...
covering a minute invasive object with nacre. Over the years, the irritating object is covered with enough layers of nacre to become a pearl. The many different...
are obtained as a by-product from other industries. Mother-of-pearl or nacre is the naturally occurring lustrous layer that lines some mollusc shells...
associations. Because they have no nucleus, keshi pearls are composed entirely of nacre. All of the following can cause a keshi pearl to grow: An attack on a pearl-producing...
The Queen Mother of the West, known by various local names, is a mother goddess in Chinese religion and mythology, also worshipped in neighbouring Asian...
reflective, refractive, and/or iridescent ornament. It may include glass or nacre pieces and be hung indoors near a window to "catch" sunlight. A suncatcher...
in the Parisian Vogue magazine, on 1 May 1926, with the title Visage de Nacre et Masque d'Ébene. It would be published once again with the current title...
Hamiota perovalis, the orangenacre mucket or orange-nacre mucket, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae...
Narayana P.; Coppersmith, Susan N.; Gilbert, P. U. P. A. (12 May 2010). "Nacre Protein Fragment Templates Lamellar Aragonite Growth". Journal of the American...
inner surface of the valve is lined with a thick layer of golden-yellow nacre with a metallic sheen. Pinctada fucata is native to the Indo-Pacific region...
macroscopic physiological scale. Nacre exhibits similar mechanical properties however with rather simpler structure. Nacre shows a brick and mortar like...
Unio. The interior of the shell of Margaritifera margaritifera has thick nacre (the inner mother of pearl layer of the shell). This species is capable...
species of large sea snails within the Vetigastropoda have a thick layer of nacre and have been used as a source of mother of pearl. Historically, the button...
time that the pearls are cultured dramatically increases the depth of the nacre, and the likelihood of producing a baroque pearl. Most Tahitian pearl farm...
Edebiyat Fakültesi Matbaası. p. 45. Dumas, Juliette (2013). Les perles de nacre du sultanat: Les princesses ottomanes (mi-XVe – mi-XVIIIe siècle). p. 464...
materials. Nacre is the composite biological material that makes up the shell of mollusks, featuring high strength and toughness. Layers of nacre work together...
the pearls of bivalves and some gastropods, whose shells are lined with nacre, are valuable.: 300–343, 367–403 The best natural pearls are produced by...
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