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  2. Gold-filled jewelry - Wikipedia

    en.wikipedia.org/wiki/Gold-filled_jewelry

    If the gold layer is 12 kt or higher, the minimum layer of karat gold in an item stamped gold-filled marks must equal at least 1 ⁄ 20th the total weight of the item. The most common stamps found on gold-filled jewelry are 1 ⁄ 20th 12kt GF and 1 ⁄ 20th 14kt GF. Also common is 1 ⁄ 10th 10kt. These standards are for modern gold-filled items.

  3. Diamond Trading Company - Wikipedia

    en.wikipedia.org/wiki/Diamond_Trading_Company

    The Diamond Trading Company (DTC) is the rough diamond sales and distribution arm of the De Beers Group. The DTC sorts, values and sells about 35% of the world’s rough diamonds by value. [ 1 ] The DTC has a combination of wholly owned and joint venture operations in South Africa (DBSSSA), Botswana (DTCB and DBGSS), and Namibia ( NDTC ).

  4. Colored gold - Wikipedia

    en.wikipedia.org/wiki/Colored_gold

    White gold is an alloy of gold and at least one white metal (usually nickel, silver, platinum or palladium). [5] Like yellow gold, the purity of white gold is given in karats. White gold's properties vary depending on the metals used and their proportions. A common white gold formulation consists of 90% wt. gold and 10% wt. nickel. [4] Copper ...

  5. De Beers - Wikipedia

    en.wikipedia.org/wiki/De_Beers

    Trading of rough diamonds takes place through two channels – De Beers Global Sightholder Sales [71] (GSS) and De Beers Auction Sales. [72] GSS sells about 90% of De Beers's rough diamonds, by value, and features wholly owned and joint venture operations in South Africa (De Beers Sightholder Sales South Africa), Botswana (DTCB), and Namibia ...

  6. Diamond - Wikipedia

    en.wikipedia.org/wiki/Diamond

    Diamonds can be sold already set in jewelry, or sold unset ("loose"). According to the Rio Tinto, in 2002 the diamonds produced and released to the market were valued at US$9 billion as rough diamonds, US$14 billion after being cut and polished, US$28 billion in wholesale diamond jewelry, and US$57 billion in retail sales. [110]

  7. Malabar Gold and Diamonds - Wikipedia

    en.wikipedia.org/wiki/Malabar_Gold_and_Diamonds

    Malabar Gold & Diamonds created 2.5 km of the chain. [31] It was completely handcrafted and the company created 2.5 km of the chain. [32] The Dubai Celebration Chain was presented at the 2015 Dubai Shopping Festival. [33] In 2018, Malabar Gold & Diamonds opened 11 stores in 6 countries in a single day creating a record in the process. [34]

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