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  2. Sapphire - Wikipedia

    en.wikipedia.org/wiki/Sapphire

    Main sapphire-producing countries. Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al 2 O 3) with trace amounts of elements such as iron, titanium, cobalt, lead, chromium, vanadium, magnesium, boron, and silicon.

  3. List of sapphires by size - Wikipedia

    en.wikipedia.org/wiki/List_of_sapphires_by_size

    Ruspoli Sapphire: 136.9 carats (27.38 g) [11] Stuart Sapphire: Sri Lanka 104 carats (20.8 g) Blue Tower of London [12] Bismarck Sapphire: Myanmar: 98.56 carats (19.712 g) Table Blue National Museum of Natural History, Washington [13] James J. Hill Sapphire: 22.66 carats (4.532 g) Cornflower National Museum of Natural History, Washington [14]

  4. Ruby - Wikipedia

    en.wikipedia.org/wiki/Ruby

    Main ruby producing countries. Ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires.

  5. Category:Sapphire mines by country - Wikipedia

    en.wikipedia.org/wiki/Category:Sapphire_mines_by...

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  6. Lists of countries by mineral production - Wikipedia

    en.wikipedia.org/wiki/Lists_of_countries_by...

    List of countries by bauxite production: Bismuth [8] China Vietnam: List of countries by bismuth production: Copper [9] Chile Peru: List of countries by copper production: Chromium [10] South Africa Turkey: List of countries by chromium production: Gold [11] China Australia: List of countries by gold production: Iron ore [12] Australia China

  7. Category:Lists of countries by mineral production - Wikipedia

    en.wikipedia.org/wiki/Category:Lists_of...

    Pages in category "Lists of countries by mineral production" The following 27 pages are in this category, out of 27 total. This list may not reflect recent changes .

  8. How big fossil-fuel-producing countries export emissions abroad

    www.aol.com/news/big-fossil-fuel-producing...

    That has allowed countries like the United States, Norway, Australia and others to say they are making progress toward international climate goals while also producing and exporting fossil fuels ...

  9. List of mining areas in Colombia - Wikipedia

    en.wikipedia.org/wiki/List_of_mining_areas_in...

    Colombia is the first producer of emeralds and as per February 2017 occupied a ninth position in the production of coal, produced in almost all of the departments of the country. [ 4 ] [ 5 ] Platinum is mostly found in the Western and Central Ranges of the Colombian Andes . [ 6 ]