You can tell if your ring is real gold by checking for hallmarks or stamps that indicate its gold content, such as 14K or 18K. You can also perform simple tests like the magnet or nitric acid to determine if your ring is real gold.

There are a few ways to determine if a ring is made of real gold. Here are a few methods:

1. Look for markings: Most gold rings will have a hallmark or stamp that indicates the purity of the gold. In the United States, this mark is usually expressed as a number followed by the letter “K” (for example, “14K” or “18K”). If your ring has a hallmark, it is made of real gold. However, some fake gold rings may also have a fake hallmark, so this method is not foolproof.
2. Perform a nitric acid test: A nitric acid test is a simple and effective way to determine if a ring is made of real gold. To perform this test, you must purchase a gold testing kit containing nitric acid and a touchstone. Rub the ring against the touchstone to create a streak, then apply a drop of nitric acid to the streak. If the streak disappears, the ring is likely made of real gold. If the streak remains, the ring may be fake or made of a lower-quality gold alloy.
3. Check for discoloration or tarnishing: Gold does not tarnish, so if your ring shows signs of discoloration or tarnishing, it may not be made of natural gold. Real gold also does not react to water or other liquids, so if your ring changes color or shows signs of corrosion when it comes into contact with fluids, it may not be real gold.
4. Get it appraised: If you are still unsure whether your ring is made of real gold, you can take it to a professional jeweler or appraiser for an evaluation. They can test the gold and determine its purity and value.

Overall, several methods exist for determining if a ring is made of real gold. Still, the most reliable way is to have it professionally tested by a jeweler or appraiser.