Unlike other metals, gold is not magnetic. Investment coins, bars and jewelry made from real gold do not stick to magnets. If you have a powerful magnet at home, try using it to select a gold item. Gold coins, bars, and objects that stick to magnets contain high levels of other metals.
For this test, apply a few drops of vinegar (preferably white vinegar) to the gold piece. Real gold is a precious metal and is therefore resistant to oxidation and corrosion by acids, including vinegar. This test was developed specifically for silver bars, as silver is one of the most conductive metals in terms of thermal energy. First, get yourself an ice cube and place it on your gold piece.
If your precious metal is real silver, the ice should start to melt immediately due to the stored heat in the silver. If nothing happens or the melting is very slow, then you bought a fake. This is a simple test that allows you to quickly identify some cheap counterfeit coins and fake gold jewelry. If your gold item floats or something floats above the ground, it could be counterfeit gold.
A gold coin or bar produced by mints for investment purposes contains either 22 carat (91.67%) or 24 carat gold (99.99%). Remember that American Gold Eagle coins are slightly heavier than 24-carat gold investment coins on the market, such as the American Gold Buffalo and the Canadian Gold Maple Leaf. If you have a gold coin, you are certain that it is pure gold. You can compare its volume and weight to a gold coin that you’re not sure about. However, metal scanners may be expensive and not worth the investment if you’re just looking for a piece or two of gold or silver jewelry, or even investment coins and bars.
Plated gold usually contains a thin layer of gold with a core of base metals such as copper, tin, or zinc. Finally, if you have any doubts about the authenticity of your gold product, contact a professional appraiser or precious metal inspector. He fell in love with buying gold and silver bars after learning how the world monetary system works, and has been an avid believer and preacher of tangible assets ever since. According to international standards, a piece of gold jewelry must contain a gold content of at least 41.7% (or 10-carat gold according to the carat system) to be considered real gold jewelry.
However, the scratch that gold leaves on a ceramic surface is usually very weak, as gold is also malleable and is more likely to deform than scratch. Additionally, you’ll find letter marks on your piece that indicate a type of gilding, which means the piece isn’t actually made of gold but is alloyed with other metals.
