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  2. Wohlwill process - Wikipedia

    en.wikipedia.org/wiki/Wohlwill_process

    The Wohlwill process is an industrial-scale chemical procedure used to refine gold to the highest degree of purity (99.999%). [1] The process was invented in 1874 by Emil Wohlwill. This electrochemical process involves using a cast gold ingot, often called a doré bar, of 95%+ gold to serve as an anode.

  3. Doré bar - Wikipedia

    en.wikipedia.org/wiki/Doré_bar

    Mint and private assayers would subsequently refine the doré bars to an acceptable purity, 999 fine, gold bullion, with the silver and base metals removed. By the time of the California gold rush , mints were moving away from the age-old process of cupellation to " part " bullion and moving toward the acid refining process developed by chemist ...

  4. Gold bar - Wikipedia

    en.wikipedia.org/wiki/Gold_bar

    A gold bar, also known as gold bullion or a gold ingot, refers to a quantity of refined metallic gold that can be shaped in various forms, produced under standardized conditions of manufacture, labeling, and record-keeping. Larger varieties of gold bars, produced by casting molten metal into molds, are called ingots. Smaller bars are often ...

  5. How Much Is a Gold Bar Worth?

    www.aol.com/finance/much-gold-bar-worth...

    A gold bar is metallic gold that has been refined and cast or minted into a shape. ... you’ll pay more for the bullion or coins than the raw gold content is worth. ... Gold bars come in standard ...

  6. PAMP (company) - Wikipedia

    en.wikipedia.org/wiki/PAMP_(company)

    PAMP SA (Produits Artistiques Métaux Précieux) is an independent precious metals refining and fabricating company, and a member of the MKS Group. Established in 1977 in Ticino, Switzerland, PAMP began as a minting facility for small bars and an alloy specialist for jewelry and watchmaking. It now offers services from mining to bullion ...

  7. Gold Coins and Bars: 5 Strategies To Get the Best Possible ...

    www.aol.com/gold-coins-bars-5-strategies...

    As CBS News noted, if you were to buy a 1-ounce gold bar, you’d likely pay a bigger per-ounce markup than if you bought 10 ounces. But Don’t Necessarily Sell in Bulk.

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