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  2. Pearling in Bangladesh - Wikipedia

    en.wikipedia.org/wiki/Pearling_in_Bangladesh

    Pearl farming takes place mainly in the southeastern region of the country, in an area stretching from Comilla District to the coastal Cox's Bazar District. The port city of Chittagong is a historic center of the pearl trade. [2] Bengali river gypsies, people who live in houseboats, are traditionally engaged in pearl farming. [1]

  3. Cultured freshwater pearls - Wikipedia

    en.wikipedia.org/wiki/Cultured_freshwater_pearls

    Freshwater pearl harvests are typically bought while still in the shell. After harvest the pearls are delivered to a first-stage factory, which is responsible for cleaning and sorting the pearls by size and shape. After this process has been completed, the pearls are considered ready material for processing factories.

  4. Nacre - Wikipedia

    en.wikipedia.org/wiki/Nacre

    The iridescent nacre inside a nautilus shell Nacreous shell worked into a decorative object. Nacre (/ ˈ n eɪ k ər / NAY-kər, also / ˈ n æ k r ə / 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.

  5. Cultured pearl - Wikipedia

    en.wikipedia.org/wiki/Cultured_pearl

    The cultured pearls on the market today can be divided into two categories. The first category covers the beaded cultured pearls, including Akoya, South Sea, Tahiti, and the large, modern freshwater pearl, the Edison pearl. These pearls are gonad-grown, and usually one pearl is grown at a time. This limits the number of pearls at a harvest period.

  6. Iridescence - Wikipedia

    en.wikipedia.org/wiki/Iridescence

    Iridescence is also found in plants, animals and many other items. The range of colours of natural iridescent objects can be narrow, for example shifting between two or three colours as the viewing angle changes, [5] [6] An iridescent biofilm on the surface of a fish tank diffracts the reflected light, displaying the entire spectrum of colours ...

  7. Pearling in Western Australia - Wikipedia

    en.wikipedia.org/wiki/Pearling_in_Western_Australia

    In 1956, a joint Japanese-Australian venture was set up at Kuri Bay, 420 kilometres (260 mi) north of Broome as a cultured pearl farm, named Pearls Proprietary Ltd. The company was owned by Male and Co, Broome Pearlers Brown and Dureau Ltd, and the Otto Gerdau Company (New York).

  8. Pearl - Wikipedia

    en.wikipedia.org/wiki/Pearl

    A black pearl and a shell of the black-lipped pearl oyster. The iridescent colors originate from nacre layers. All shelled mollusks can, by natural processes, produce some kind of "pearl" when an irritating microscopic object becomes trapped within its mantle folds, but the great majority of these "pearls" are not valued as gemstones.

  9. World of Warcraft: Wrath of the Lich King - Wikipedia

    en.wikipedia.org/wiki/World_of_Warcraft:_Wrath...

    World of Warcraft: Wrath of the Lich King is the second expansion set for the massively multiplayer online role-playing game (MMORPG) World of Warcraft, following The Burning Crusade. It launched on November 13, 2008 and sold 2.8 million copies within the first day, making it the fastest selling computer game of all time released at that point.