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  2. 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.

  3. Tourmaline - Wikipedia

    en.wikipedia.org/wiki/Tourmaline

    An excellent example of watermelon tourmaline jewelry is a brooch piece (1969, gold, watermelon tourmaline, diamonds) by Andrew Grima (British, b. Italy, 1921–2007), in the collection of Kimberly Klosterman and on display at the Cincinnati Art Museum. [19] Some forms of tourmaline are dichroic; they change color when viewed from different ...

  4. 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. [4] Notable countries where rubellite can be mined include Afghanistan, Brazil, Madagascar, Myanmar, Nigeria, Russia, and the United ...

  5. List of minerals - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals

    Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...

  6. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Paraiba Tourmaline has become one of the most popular gemstones in recent times thanks to its color and is considered to be one of the important gemstones after rubies, emeralds, and sapphires according to Gübelin Gemlab. Even though it is a tourmaline, Paraiba Tourmaline is one of the most expensive gemstones. [31]

  7. List of minerals by optical properties - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals_by...

    Toggle the table of contents. List of minerals by optical properties. 1 language. ... Color in plain polars Anorthite: Triclinic: Biaxial (-) 0.013: None Biotite ...

  8. People In This Online Group Dedicated To DIY Are In Awe Of ...

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    Image credits: AnthonyChristopher Still on the topic of having the proper mindset, researcher Natascha Chtena says people tend to confuse handicrafts with chores. In an article for Inside Higher ...

  9. Tsilaisite - Wikipedia

    en.wikipedia.org/wiki/Tsilaisite

    Tsilaisite is a manganese rich variety of elbaite tourmaline. [2] It is also known as Tsilaizite. [3] Tsilaisite is related Fluor-tsilaisite. [4] The gem is named after the location it was first found. [5]

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