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  2. Gemfields - Wikipedia

    en.wikipedia.org/wiki/Gemfields

    Gemfields Group Ltd (formerly Pallinghurst Resources Limited) is a British mining company incorporated in Guernsey and headquartered in London, United Kingdom, and is a supplier of coloured gemstones. [5] The company specializes in the mining, processing and sale of coloured gemstones, in particular emeralds and rubies. The group sells rough ...

  3. List of largest rough diamonds - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_rough_diamonds

    This is a partial list of the largest non-synthetic diamonds with a rough stone (uncut) weight of over 200 carats (40 grams). [1] The list is not intended to be complete—e.g., the Cullinan (formerly Premier) mine alone has produced 135 diamonds larger than 200 carats since mining commenced.

  4. Mining industry of the Democratic Republic of the Congo

    en.wikipedia.org/wiki/Mining_industry_of_the...

    Canada's mining ministry, Natural Resources Canada, estimated the 2009 value of Canadian-owned mining assets in the D.R. Congo at Cdn.$3.3 billion, ten times more than in 2001, making the DRC the African country with second-highest African level of Canadian investment after Madagascar, and Canadian investment in the Congo representing a sixth ...

  5. African Rainbow Minerals - Wikipedia

    en.wikipedia.org/wiki/African_Rainbow_Minerals

    African Rainbow Minerals Limited is a mining company based in South Africa. ARM has interests in a wide range of mines, including platinum and platinum group metals (PGMs), iron , coal , copper , and gold . [ 2 ]

  6. Mineral industry of Africa - Wikipedia

    en.wikipedia.org/wiki/Mineral_industry_of_Africa

    The second-largest mineral industry in the world is the mineral industry of Africa, which implies large quantities of resources due to Africa being the second largest continent, with 30.37 million square kilometres of land.With a population of 1.4 billion living there, mineral exploration and production constitute significant parts of their economies for many African countries and remain keys ...

  7. Tanzanite - Wikipedia

    en.wikipedia.org/wiki/Tanzanite

    On 24 June 2020, a new record for the world's largest rough tanzanite was set after a small-scale miner, Saniniu Laizer, mined two stones of 9.72 kg (21.4 lb) and 5.1 kg (11 lb) and sold them to the Government of Tanzania through Ministry of Mining for TSh 7.74 billion (US$3.35 million) [23] surpassing a record of 16,839 carats (3.37 kg; 7.42 ...

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