How to Tell if Gold is Real: 5 At-Home Tests
Use the magnet test, lighter test, and float test to verify if your gold chain or ring is real. Plus, learn how to decode gold hallmarks and stamps.
Our team of certified gemologists and jewelry experts provides in-depth analysis to help you make informed purchasing decisions.
Key takeaways
- •Real gold is heavy and will immediately sink in a glass of water.
- •Gold is entirely non-magnetic. If your chain sticks to a magnet, it contains base metals like iron or steel.
- •Check heavily for hallmarks on the clasp or inner band. Stamps like '14k' or 'Au585' signal real gold.
- •Stamps reading 'GF' (Gold Filled) or 'GP' (Gold Plated) mean the core of the piece is fake.
Fake gold chains and counterfeit rings flood the secondary market. If you buy a piece second-hand or inherit an unmarked item, you need to verify its purity quickly. Use these five accessible tests to definitively tell if you hold real gold.
The Best DIY Gold Tests
Perform a combination of these tests to confirm authenticity. A single test is not a total guarantee.
1. The Lighter Test
Real gold does not catch fire, burn, or immediately darken under low heat. Hold the jewelry securely with metal tongs or pliers to avoid burns. Keep a constant, steady flame from a standard lighter on the piece for 60 seconds.
- Real: The gold gets extremely hot but doesn't change color. It gets brighter as it heats up.
- Fake: Base metals coated in fake gold paint will quickly turn black, smoke, or turn a dark blue/green.
2. The Magnet Test
Gold is completely non-magnetic. Bring a strong neodymium magnet close to the item. Do not use a weak refrigerator magnet.
- Real: The jewelry does not react. It sits completely still.
- Fake: The piece snaps strongly to the magnet. The item contains a base metal core (iron or nickel).
Note: Many real gold chains use a steel spring inside the clasp mechanisms. A magnetic clasp is normal, but the chain links themselves must not react.
3. The Makeup Test
This is an old trade secret. Apply a streak of liquid foundation across your hand or forehead and let it dry entirely. Rub the gold jewelry firmly against the dried foundation.
- Real: The skin stays completely clear.
- Fake: A black or heavily dark gray streak appears instantly on your skin.
4. The Float Test
Gold is a very dense, heavy metal. Fill a cup with water and gently drop your jewelry inside.
- Real: The piece drops straight to the bottom immediately.
- Fake: Fake gold pieces sometimes float slightly, drift down slowly, or hover slightly above the absolute bottom if they contain hollow plastic or light metal.
Understanding Gold Hallmarks and Stamps
Before burning or dropping your jewelry, look closely at the clasps. Legitimate manufacturers always stamp their gold.
- 10k, 14k, 18k, 24k: Represents actual karat purity. 24k is 100% pure. 14k is 58.3% pure gold combined with alloys.
- GF (Gold Filled): Not solid gold. It is a thick sheet of gold bonded to a base metal.
- GP (Gold Plated) / HGE (Heavy Gold Electroplate): A microscopic layer of gold over brass or steel. It wears off quickly.
- Vermeil: A thick layer of gold over sterling silver.
Don't Get Scammed: Buy from Trusted Brands
If you want a solid gold piece that passes all tests and lasts a lifetime, you must buy from a verified source.
Solid Gold Essentials
Brands like Jaxxon provide verified, massive, solid 14k gold chain options that are independently appraised.
Check out our guide to buying men's gold chains to avoid specific structural scams.
Frequently Asked Questions
Does real gold turn green?
No. If your skin turns green after wearing a ring or chain, the jewelry is made of brass or copper. Real gold, specifically 14k and higher, does not cause skin discoloration.
Is the vinegar test for gold safe?
Yes. Put a few drops of white vinegar on the piece. If the metal changes color, it is not real gold. If it maintains its shine, it is real.
Can a jeweler test my gold for free?
Most local jewelers will quickly test your gold at no charge using a specialized acid test or an electronic gold tester. This provides an exact purity readout.
When in doubt, trust the stamp, apply the magnet, and perform the water test. These three quick checks eliminate the vast majority of fake gold on the market.
About this guide
Written by the TheCaratCut Editorial Team. Our recommendations follow our editorial policy, and we may earn commissions through affiliate links. See our affiliate disclosure.