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  2. Tanzanite - Wikipedia

    en.wikipedia.org/wiki/Tanzanite

    Tanzanite is only found in Simanjiro District of Manyara Region in Tanzania, in a very small mining area approximately 7 km (4.3 mi) long and 2 km (1.2 mi) wide [4] near the Mererani Hills. [5] Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation. [6]

  3. Talk:Tanzanite - Wikipedia

    en.wikipedia.org/wiki/Talk:Tanzanite

    1) The rarity of Tanzanite (found only in a 5sq mile patch in merelani, tanzania; 1000 times rarer than diamond; expected to run out within the next few decades). 2) The extreme fluctuations in the value of Tanzanite over recent years due to erratic supply and demand. caused by:

  4. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    This is a list of gemstones, organized by species and types. Minerals There ... Tanzanite (var.) Thulite (var.) Zultanite; Zunyite; Artificial and lab created.

  5. 15 of the rarest items in the world - AOL

    www.aol.com/news/2017-08-01-15-of-the-rarest...

    In February 2007, the world's rarest baseball card sold at auction for $2.3 million. If you think that's totally wild, consider the world's rarest bible, which could net you $25 to $35 million.

  6. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    The mineral was named in honor of the British gemologist Arthur Charles Davy Pain. At one point it was considered the rarest mineral on Earth. [71] Tanzanite was discovered in 1967 in Northern Tanzania. With its supply possibly declining in the next 30 years, this gemstone is considered to be more rare than a diamond.

  7. TanzaniteOne - Wikipedia

    en.wikipedia.org/wiki/TanzaniteOne

    They have the ability to purchase large amounts of rough and have wholesale and retail distribution networks in place to facilitate the sale of loose tanzanite and finished jewellery. In August 2013 TanzaniteOne [4] announced they had opened an online boutique, www.tananiteoneonline, which sold tanzanite gemstones and tanzanite set gold ...

  8. Cardinal gem - Wikipedia

    en.wikipedia.org/wiki/Cardinal_gem

    The five cardinal gems. Clockwise from top: sapphire, ruby, emerald, amethyst, diamond. Cardinal gems are gemstones which have traditionally been considered precious above all others. The classification of the cardinal gems dates back to antiquity, and was largely determined by ceremonial or religious use as well as rarity. [1]

  9. Kimberlite - Wikipedia

    en.wikipedia.org/wiki/Kimberlite

    The discovery of diamond-bearing kimberlites in the 1870s in Kimberley sparked a diamond rush, transforming the area into one of the world’s largest diamond-producing regions. Since then, the association between kimberlites and diamonds has been crucial in the search for new diamond deposits around the globe. [22] [23]

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