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How you test gold?

Updated: 9/15/2023
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Wiki User

11y ago

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This Test Is One Of The Most Accurate Tests For Gold This test is by far my favorite but not very well known at all. It was discovered over 100 years ago in New Zealand and has been used since by gold prospectors all over the world.

This method of testing gold will definitely gain fame in the coming years with the price of gold rising and the need for everyday people like you and me to have safe, accurate, inexpensive ways to test our gold.

I've already seen consumer gold testers using the same principals as this test for under 50 bucks as a "gold verification pen" or "goldvp" where just by writing on the gold with the pen will tell if the gold is real and the quality (karat) of the gold.

  1. 1

    Find something that you would like to test for gold content

    • Place in a glass or plastic jar that has a cap.
    • Pour into the jar the same volume of alcoholic solution of iodine (tincture of iodine, of chemists) as the metal your testing
    • Shake solution and test metal for 30 seconds
  2. 2

    Take A piece of Swedish filter-paper

    • Saturate the filter paper with the clear supernatant liquid.
  3. 3

    Burn filter paper to an ash

    • Notice the ash will be colored purple.
  4. 4

    Drip 4 drops of bromine-a on the ash

    • If the ash turns white this is a clear indication of genuine gold.

The time occupied by the whole process is a few minutes.

You can determine the karate of your gold using a popular method of relative accuracy. This test requires a set of testing needles with different tips of exact karat, a test stone and acids.

Rub a small piece of your item on the test stone and leave a visible deposit. Select the needle that is the nearest to the karat value you believe the gold to be and rub it on the test stone, leaving a visible mark next to your first deposit. Leave a drop of the acid approximating the karat that you believe your item to beWhen the two marks react the same to the acid, then you will know that the gold content (karat value) of your test sample is the same as that of the needle.

When your test sample mark reacts sooner than your needle mark, your test sample has a lower gold content.When your needle mark reacts sooner than your test sample mark, your test sample has a higher karat value. You can repeat these trials until you are able to find a close approximation of the karat of the gold piece.

When your test proves that your sample has no reaction to the acid, this will reveal that your sample is of higher karate than the acid. In this case you can test again, using a higher test needle and acid until there is a reaction. This way the karat of the gold piece can be determined to a closer approximation.

Pre-mixed acids come in easy-to-use plastic bottles that are entirely secure, and come with color-coded caps. You can use these acid tests on jewelry that has been properly filed to reveal the base metal (if any.) You can use pre-mixed test acids for your 10K, 14K, 18K, 22K gold.

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11y ago
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