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  2. How Much Is a Diamond Worth? How To Find the Value of ... - AOL

    www.aol.com/much-diamond-worth-value-diamonds...

    The weight of a diamond is one of these variables that determines a diamond’s worth and is what the general public is most familiar with. The unit of measurement, called the carat, equals 200 ...

  3. Tanzanite - Wikipedia

    en.wikipedia.org/wiki/Tanzanite

    Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium. [3] Tanzanite belongs to the epidote mineral group. 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 ...

  4. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  5. Hierarchy of precious substances - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_of_precious...

    The measurement of sales of popular music starts high relative to the wedding anniversary scale, concentrating on gold and platinum (see gold album).Likewise, credit card companies usually have a "gold card" and a "platinum card" (many formerly had a "silver card" then followed by a "gold card", but due to similarity in appearance between silver and platinum these were often discontinued with ...

  6. 813-karat diamond was just sold as the most expensive diamond ...

    www.aol.com/news/2016-05-09-813-karat-diamond...

    The 813-karat diamond (which is roughly 407 times the size of the average US engagement ring, for reference) was mined from Lucara's "Karowe" mine in Botswana in late November of last year.

  7. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Found all over the world, the industry of coloured gemstones (i.e. anything other than diamonds) is currently estimated at US$1.55 billion as of 2023 and is projected to steadily increase to a value of $4.46 billion by 2033.

  8. Carat (mass) - Wikipedia

    en.wikipedia.org/wiki/Carat_(mass)

    In the United Kingdom the original Board of Trade carat was exactly 3 + 1647 ⁄ 9691 grains (~3.170 grains = ~205 mg); [ii] in 1888, the Board of Trade carat was changed to exactly 3 + 17 ⁄ 101 grains (~3.168 grains = ~205 mg). [iii] Despite it being a non-metric unit, a number of metric countries have used this unit for its limited range of ...

  9. 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 ...