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  2. Hierarchy of precious substances - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_of_precious...

    The measurement of sales of popular music starts high relative to the wedding anniversary scale, concentrating on gold and platinum (see gold album).Likewise, credit card companies usually have a "gold card" and a "platinum card" (many formerly had a "silver card" then followed by a "gold card", but due to similarity in appearance between silver and platinum these were often discontinued with ...

  3. List of most expensive philatelic items - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    This is a list of the highest known prices paid for philatelic items, including stamps and covers. The current record price for a single stamp is US$9,480,000 paid for the British Guiana 1c magenta. [1] [2] This list is ordered by consumer price index inflation-adjusted value (in bold) in millions of United States dollars in 2023.

  4. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Lower ranks of coal can be less expensive, for example sub-bituminous coal can cost around US$0.038/kg carbon. [19] Graphite flakes can cost around US$0.9/kg carbon. [ 20 ] Price of synthetic industrial diamond for grinding and polishing can range from 1200 to 13 300 USD/kg, while cost per weight of large synthetic diamonds for industrial ...

  5. 4 Decades of Valuable Coins: See Which Are Worth the Most ...

    www.aol.com/finance/4-decades-valuable-coins-see...

    For example, in 2021, a 1933 Gold Double Eagle coin sold at auction for over $18 million. It fetched such a high price because of its extreme scarcity, as it is one of only 13 surviving coins from ...

  6. Gold has never been this expensive

    www.aol.com/gold-never-expensive-165817259.html

    Prices for the yellow metal jumped as much as 3% in Monday trade to reach $2,135 per ounce, rising above the previous record of $2,072 notched in August 2020. Prices later fell on the day to trade ...

  7. 15 Most Expensive Things in the World for 2022 - AOL

    www.aol.com/15-most-expensive-things-world...

    It’s not surprising to find a few cars on this list of the world’s most expensive things. In 2018, a 1962 red Ferrari GTO sold to an anonymous buyer at Sotheby’s auction in Monterey for $48. ...

  8. Precious metal - Wikipedia

    en.wikipedia.org/wiki/Precious_metal

    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 around $50 million AUD. [2] China has produced coins in very limited quantities (less than 20 pieces minted) that exceed 8 kilograms (260 ozt) of gold.

  9. List of most expensive coins - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive_coins

    List of most expensive coins Price Year Type Grade Issuing country Provenance Firm Date of sale $18,900,000 1933 1933 double eagle: MS-65 CAC United States: King Farouk of Egypt: Sotheby's [1] June 8, 2021 $12,000,000 1794 Flowing Hair dollar: SP-66 CAC United States Neil, Carter Private sale [2] January 24, 2013 $9,360,000 1787 Brasher ...