Place your jewelry on a table or hold it in your hand, pour some white vinegar directly onto the metal (a dropper can also be used), if the metal of the jewelry changes color, it is not pure gold and if it continues to glow, you have real gold in your hand. One way to test the purity of gold is to use vinegar. All you need to do is get the piece of jewelry you want to test and white vinegar. The float test is a quick test that shows whether your gold is real or not without damaging your piece of jewelry.
This test isn’t absolutely foolproof, as some metals that aren’t gold are also heavy, so they sink and make you believe they’re gold. It’s best to do another test to be sure. If the jewelry is only gold plated (covered with a thin layer of gold but consists of other metals on the inside), the thin gold plating should also begin to melt and reveal the inner metal. If the metal has changed its color even slightly, the gold is not pure, but if it continues to glow, the gold is pure.
When you receive a gold item, it doesn’t have to be in its purest form. Jewelers usually add other metals to the gold to make it more durable. If you’re still not sure, test the authenticity of your piece of gold by holding it close to a magnet, as real gold doesn’t react. If you have gold jewelry yourself, it’s important that you know how to test gold at home to find out whether the gold is pure or not, as all gold isn’t necessarily real gold. It may not be as reliable as other sources when it comes to testing your gold, but it is good enough to know whether the gold is real or fake.
When using density to differentiate the authenticity of gold, you must also consider that there may be differences in density between different types of gold. Gold doesn’t rust either. So when you see signs of rust, you know that your piece isn’t real gold and you don’t have to worry about damaging your item if it is actually real gold. Be careful though, as some pieces of gold may have a false stamp engraved to pass them off as pure gold. Archaeological sites such as the over 6,000-year-old mines in the Asosa region in Ethiopia and the 5,500-year-old Sakdrisi mine in Georgia pushed the systematic practice of gold mining into the background several thousand years earlier.
To test gold at home, check your gold for an authenticity mark. GF or HGP mean that it is gold plated, while 24 K or another number represents real gold. When most people think of testing gold at home, they might think of gold dealers biting a piece of gold to see if it’s real. Absolutely 100% pure gold is unheard of, especially because pure gold is very soft and is not suitable as a long-lasting piece of jewelry. Counterfeit gold such as fool’s gold (actually pyrite, an iron sulfide) and pieces of brass, iron, or copper alloys darken or otherwise discolor when exposed to fire.