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  2. Tourmaline - Wikipedia

    en.wikipedia.org/wiki/Tourmaline

    The new type of tourmaline, which soon became known as paraiba tourmaline, came in blue and green. Brazilian paraiba tourmaline usually contains abundant inclusions. Much of the paraiba tourmaline from Brazil does not actually come from Paraíba, but the neighboring state of Rio Grande do Norte. Material from Rio Grande do Norte is often ...

  3. Paraíba - Wikipedia

    en.wikipedia.org/wiki/Paraíba

    A paraiba tourmaline and diamond ring, in platinum. The neon Paraíba tourmaline has also been found in the neighboring state of Rio Grande do Norte. In the early 2000s, tourmaline gems containing copper and bearing similar colors were found in Nigeria and Mozambique. [63] Initially, the nomenclature for this tourmaline was "Paraíba tourmaline".

  4. List of lighthouses in Vietnam - Wikipedia

    en.wikipedia.org/wiki/List_of_lighthouses_in_Vietnam

    Name Image Year built Location & coordinates Class of Light [3] Focal height [3] NGA number [3] Admiralty number [3] Range nml [3]; Biển Sơn Lighthouse: Image: 1962: Nghi Sơn Thanh Hóa province

  5. Vietnamese encyclopedias - Wikipedia

    en.wikipedia.org/wiki/Vietnamese_encyclopedias

    Following the increasing of Internet usage in Vietnam, many online encyclopedias were published. The two largest online Vietnamese-language encyclopedias are Từ điển bách khoa toàn thư Việt Nam, a state encyclopedia, and Vietnamese Wikipedia, a project of the Wikimedia Foundation.

  6. Encyclopedic Dictionary of Vietnam - Wikipedia

    en.wikipedia.org/wiki/Encyclopedic_Dictionary_of...

    Từ điển bách khoa Việt Nam (lit: Encyclopaedic Dictionary of Vietnam) is a state-sponsored Vietnamese-language encyclopedia that was first published in 1995. It has four volumes consisting of 40,000 entries, the final of which was published in 2005. [1] The encyclopedia was republished in 2011.

  7. Vietnamese Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Vietnamese_Wikipedia

    The Vietnamese Wikipedia (Vietnamese: Wikipedia tiếng Việt) is the Vietnamese-language edition of Wikipedia, a free, publicly editable, online encyclopedia supported by the Wikimedia Foundation. Like the rest of Wikipedia, its content is created and accessed using the MediaWiki wiki software.

  8. Elbaite - Wikipedia

    en.wikipedia.org/wiki/Elbaite

    Elbaite, a sodium, lithium, aluminium boro-silicate, with the chemical composition Na(Li 1.5 Al 1.5)Al 6 Si 6 O 18 (BO 3) 3 (OH) 4, [4] is a mineral species belonging to the six-member ring cyclosilicate tourmaline group.

  9. Rubellite - Wikipedia

    en.wikipedia.org/wiki/Rubellite

    Rubellite is the red or pink variety of tourmaline and is a member of elbaite.Rubellite is also the rarest gem in its family. [2] It is occasionally mistaken for ruby. [3] These gems typically contain inclusions.