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How to convert grams 90% gold to ounces 99% gold

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  • How to convert grams 90% gold to ounces 99% gold

    As used in the jewelry or coin world --

    A Troy ounce of 100% gold [ 24-carat ]
    EQUALS

    How many grams ???

    For some reason I have the idea
    that it is about 31+ grams? [ 31.103 ]

    Or.... does the use of "Troy" only apply to Silver?

    How do the conversion calculations proceed [ show your work! ] to get --

    FROM: 1.672 grams of 90% gold [0.900 ]

    TO: being equal to 0.0484 ounces of 0.999 gold? [ pure or 24K gold ]

    [ I was told that 0.0484 is the correct answer. Is that true? ]

    Thanks, Mark Cornell

  • #2
    Re: How to convert grams 90% gold to ounces 99% gold

    Originally posted by Unregistered BLUEBOY66 View Post
    As used in the jewelry or coin world --

    A Troy ounce of 100% gold [ 24-carat ]
    EQUALS

    How many grams ???

    For some reason I have the idea
    that it is about 31+ grams? [ 31.103 ]

    Or.... does the use of "Troy" only apply to Silver?

    How do the conversion calculations proceed [ show your work! ] to get --

    FROM: 1.672 grams of 90% gold [0.900 ]

    TO: being equal to 0.0484 ounces of 0.999 gold? [ pure or 24K gold ]

    [ I was told that 0.0484 is the correct answer. Is that true? ]

    Thanks, Mark Cornell
    The troy ounce is defined as 31.103 4807 g, exactly

    The 1.672 g is 1.5048 g gold, 0.1672 g something else (multiply by 90% and 10%

    1.5048g/0.999 = 1.5063 g of 0.999 gold

    1.5063 g/31.103 4807 g/tr oz = 0.04843 tr oz

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