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    tallT50's Avatar
    tallT50 Posts: 1, Reputation: 1
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    #1

    Apr 29, 2009, 10:07 AM
    Distinguishing white gold
    How do I know if a ring I bought is really 14K gold or something else? i.e. 10K gold, 14K gold over silver, silver
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Apr 29, 2009, 10:27 AM

    You have to have it analyzed. It can be accurately analyzed non-destructively using an x-ray fluorescence analysis, or destructively (requires a small sample) using atomic absorption spectrophotometry. Jewelers use the specific gravity (density) of the metal. It's only approximate (probably ±10%).
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