Gently drop your gold object into the water. Real gold is a heavy metal and won't float, so if your gold item floats, you'll know it's not real gold. In addition, if you notice rust or tarnish on the item after being in the water, this is also a sign that it is not real gold, as the gold will not rust or tarnish. The most reliable method to check if something is gold or solid gold plated is to take an acid test.
For the acidity test, take a small piece of jewelry or, with a small needle, scratch a small part of your gold, take a dropper found in the acid kit and fill it with acid. Now use this dropper to inject that scratch with a small drop of acid. The striped part is likely to change color in response to reaction with the acid. Carefully observe what color you have changed to and match it with the color chart provided in the acid kit.
Not only will this tell you if the gold was fake or real, but it will also help you identify the real metal it is. To test your gold at home with this method, you'll need to get an acid test kit that is readily available at jewelry stores and even online. The acid test is also used to determine the carats of gold. If you decide to use this method, read the instructions in the kit carefully before starting the procedure.
One of the most foolproof methods to test your gold jewelry is the ceramic scratch test. For this method, get an unglazed ceramic plate or piece of tile and scrape a piece of gold across the surface. Real gold isn't magnetic, but many other metals are. If you have a relatively strong magnet (somewhat stronger than a fridge magnet), you can easily check if your gold is real by placing the magnet close to the piece and seeing if it is attracted by the magnet.
Fake gold pieces, such as fools gold (actually pyrite, an iron sulfide) and parts made of brass, iron, or copper alloys will darken or change color when exposed to fire. A black or other dark stripe means that your piece is not made of gold, while a gold stripe indicates that it is genuine. By performing these tests at home, you may be able to confirm if your item is real or not before taking it to a jewelry box. The float test is a quick test that will reveal if your gold is real or not without damaging your piece.
While this test is far from the most reliable way to distinguish real gold from fake gold, it is one of the easiest and quickest to do, and it won't damage your jewelry. As such, if your gold jewelry exhibits the same smell, it is very likely that it is not real gold, or at least not pure gold. Through this test, you should carefully inspect your gold object with the magnifying glass to find some essential visual clues about it. A piece of 18-carat white gold can have a density of between 14.7 and 16.9 grams per milliliter.
The Sigma Metalytics Precious Metal Tester is a perfect choice for measuring bulk gold, ingots or coins, at home. And when you're done reading, you'll have all the information you need to buy gold with confidence. If you really want to know for sure how much gold is in your gold, the most proven method to find out is to take it to a reputable jeweler and have it tested there. Below are two overviews of the most recommended gold analyzers: the Sigma Metalytics precious metal tester and the Thermo Scientific XRF analyzer.
These machines send X-rays or electromagnetic waves through your piece of gold and record and analyze how these different waves interact with metal. Acid kit for gold testing, which may include hydrochloric and nitric acids along with a dropper, or particular samples for each type of gold carat acids (10K acid, 18K acid, 22K acid, etc. Depending on where and when the piece was manufactured, hallmarks can tell you its date of manufacture and its gold content. .