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  2. BullionByPost - Wikipedia

    en.wikipedia.org/wiki/BullionByPost

    BullionByPost is a trading name of Jewellery Quarter Bullion Limited. [2] In 2016 BullionByPost was described as Britain's biggest online gold dealer. At one point it had £5.6 million of sales in one day, beating its previous record (in 2014) of £4.4 million.

  3. 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]

  4. Coinage metals - Wikipedia

    en.wikipedia.org/wiki/Coinage_metals

    Gold, silver and bronze or copper were the principal coinage metals of the ancient world, the medieval period and into the late modern period when the diversity of coinage metals increased. Coins are often made from more than one metal, either using alloys, coatings ( cladding / plating ) or bimetallic configurations.

  5. Precious metal - Wikipedia

    en.wikipedia.org/wiki/Precious_metal

    One of the largest bullion coins in the world was the 10,000-dollar Australian Gold Nugget coin minted in Australia, which consists of a full kilogram of 99.9% pure gold. In 2012, the Perth Mint produced a 1-tonne coin of 99.99% pure gold with a face value of $ 1 million AUD, making it the largest minted coin in the world with a gold value of ...

  6. Doré bar - Wikipedia

    en.wikipedia.org/wiki/Doré_bar

    The proportions of silver and gold can vary widely. Doré bars weigh as much as 25 kg. During the 19th century gold rushes, gold nuggets and dust were melted into crude gold bars mistakenly called "bullion" by miners. They were, more accurately, doré bars with higher contents of silver and other adulterants than the mints would accept.

  7. Fineness - Wikipedia

    en.wikipedia.org/wiki/Fineness

    The quantity of gold by volume in a less-than-24-carat gold alloy differs according to the alloys used. For example, knowing that standard 18-carat yellow gold consists of 75% gold, 12.5% silver and the remaining 12.5% of copper (all by mass), the volume of pure gold in this alloy will be 60% since gold is much denser than the other metals used ...

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