Is Gold Magnetic? Real vs Fake Gold and What Magnets Tell You
Real gold does not stick to a magnet. If yours does, it's plated, alloyed with a magnetic metal, or not gold at all — but a clean magnet test still doesn't prove a piece is solid gold.
Key Takeaways
- Pure gold is diamagnetic — it weakly repels magnets, so a real gold coin or bar shows zero pull from a household magnet.
- If a magnet sticks, the piece is plated over steel, alloyed with nickel or iron, or not gold at all.
- Passing the magnet test isn't proof. Tungsten and brass fakes also pass. Confirm with a hallmark check, then acid or XRF testing.
We buy gold every week at US Gold and Coin and run the magnet test before anything else hits the scale. It takes ten seconds, costs nothing, and rules out the most common fakes on the spot. The catch: it's a screening test, not a verdict. A piece that passes still needs a hallmark check and, for anything valuable, an acid or XRF scan.
Below, we cover exactly how the test works, what it proves, what it misses, and what to do next based on the result.
Why Pure Gold Is Not Magnetic
Whether a metal responds to a magnet depends on the electrons inside its atoms. Every metal you handle falls into one of three categories.
| Category | Behavior with a magnet | Common metals |
|---|---|---|
| Ferromagnetic | Magnetic | Iron, nickel, cobalt, most steel |
| Paramagnetic | Sometimes | Aluminum, platinum, titanium |
| Diamagnetic | Not magnetic | Gold, silver, copper, lead, zinc |
Gold sits firmly in the diamagnetic group. Its outer-shell electrons are paired, so the atoms have no net magnetic moment. A household magnet has no measurable pull on a real gold coin, ring, or bar. The same goes for silver and copper — both repel magnets so weakly that the effect is invisible without lab equipment.
How to Do the Gold Magnet Test Correctly
Most people use a refrigerator magnet, which is too weak to give a useful answer. You need a strong neodymium magnet (also called rare-earth or N52). They cost under $15 at any hardware store or on Amazon.
- 1Place the gold piece on a flat, non-metal surface — a wooden table or sheet of paper.
- 2Hold the neodymium magnet a quarter-inch above the piece without touching it.
- 3Lower the magnet slowly until it touches, then lift straight up.
- 4Watch what happens. If the gold lifts off the table or sticks to the magnet, it isn't pure gold.
- 5Tilt the magnet slightly and slide it sideways across the piece. Any drag or faint click is a fail.
Why Your "Gold" Sticks to a Magnet
A magnet sticking to your gold is a clear sign of a problem — but it doesn't always mean you have nothing valuable. Here are the four reasons we see most often at the counter.
1. Gold-plated over steel or iron
The most common cause. A 0.5–5 micron layer of real gold over a magnetic core. Common in costume jewelry, gold-filled chains, and most fake bars from auction sites.
2. Nickel or iron in the alloy
Some pre-2000 white gold uses nickel as a whitener. Nickel is ferromagnetic, so a heavily nickel-alloyed piece can show slight pull to a strong magnet.
3. Brass or bronze base under finish
Cheap costume pieces sometimes layer a gold-colored finish over a steel base. The plating fools the eye but the magnet pulls right through it.
4. Counterfeit gold bar
Most fake bars use a tungsten core, which is non-magnetic and nearly the same density as gold. These pass the magnet test. Confirm with XRF or specific-gravity testing.
Six Signs of Fake Gold
The magnet test is one signal. Real gold gives away fakes through five other tells. A piece that fails on two or more is almost certainly not solid gold.
| Sign | Real gold | Fake gold |
|---|---|---|
| Magnet response | No pull | Sticks or shows resistance |
| Color at edges and clasps | Same yellow throughout | Plating wears off, exposing grey base |
| Hallmark stamp | 10K, 14K, 18K, 24K, 375, 585, 750, or 999 | No stamp, or "GP" / "GF" / "HGE" |
| Weight in hand | Surprisingly heavy for its size | Light, feels hollow |
| Skin reaction | No discoloration | Leaves green or black mark |
| Acid test | Does not dissolve in nitric acid | Bubbles, fizzes, or turns green |
A piece that passes all six is very likely real, but the only way to be certain is a professional acid or XRF test — which we offer free at our office.
Fastest to Slowest: Six Tests Ranked
Run them in this order. Each rules out a specific type of fake.
1. Magnet test
Catches plated steel and high-nickel alloys. Misses tungsten, brass, and copper fakes.
2. Hallmark check
Look for 10K, 14K, 18K, 24K, 375, 585, 750, or 999. Stamps like "GP," "GEP," "HGE," "GF," or "RGP" mean plated.
3. Skin test
Wear it for a few hours in warm weather. Green or black skin means base metals reacting with sweat.
4. Float test
Real gold (density 19.32 g/cc) sinks immediately. Plated jewelry over hollow brass may sink slowly or float.
5. Acid test
$20 testing kit with nitric acid for each karat. A streak that disappears or turns green isn't gold of that karat.
6. XRF or specific-gravity
X-ray fluorescence reads the exact percentage of every element. Conclusive. Free at our office whether you sell or not.
Is 10k, 14k, 18k, or 24k Gold Magnetic?
Every real gold karat is non-magnetic. The answer shifts only slightly based on what's alloyed in.
| Karat | Gold purity | Magnetic? | Notes |
|---|---|---|---|
| 24k | 99.9%+ | Not magnetic | Pure gold. No response to any household magnet. |
| 22k | 91.7% | Not magnetic | American Eagles, Indian and Middle Eastern jewelry. |
| 18k | 75% | Not magnetic | Common alloys: copper, silver, palladium. None are magnetic. |
| 14k | 58.3% | Not magnetic | Yellow 14k is non-magnetic. Old white 14k may show very slight pull. |
| 10k | 41.7% | Not magnetic | Real 10k will not stick, even at high alloy proportion. |
| Gold-plated | <0.5% | Magnetic | If the base metal is steel, the magnet sticks right through the plating. |
Is White Gold Magnetic?
White gold is the one type of real gold that occasionally surprises people on a magnet test. It's yellow gold mixed with white metals — palladium, silver, nickel, or zinc — to lighten the color. Of those, only nickel is ferromagnetic.
A piece of older white gold, especially US-made before roughly 2000, may contain enough nickel to show very slight attraction to a strong neodymium magnet. Modern white gold sold in the US, EU, and UK uses palladium because of nickel-allergy regulations and is fully non-magnetic.
Don't panic if your white gold shows mild pull. Check the hallmark first. A 585 or 14K stamp combined with mild magnet response is consistent with real high-nickel white gold. No stamp plus strong magnet response is more likely plated steel.
Other Metals and the Magnet
If you're sorting through old jewelry or coins, here's the quick reference for what should and shouldn't stick.
| Metal | Magnetic? | How it relates to gold |
|---|---|---|
| Gold | Not magnetic | Pure gold is diamagnetic. |
| Silver | Not magnetic | A magnetic "silver" piece is plated. |
| Copper | Not magnetic | Pre-1982 pennies (95% copper) do not stick. |
| Platinum | Not magnetic | Paramagnetic — only detectable in lab conditions. |
| Brass | Not magnetic | A "gold" piece that fails the magnet test could still be brass. |
| Stainless steel | Sometimes | Austenitic (304/316) is weakly magnetic. Other grades are strongly magnetic. |
| Aluminum | Not magnetic | Looks nothing like gold and rarely confuses anyone. |
| Tungsten | Not magnetic | The most dangerous gold fake — same density as gold and non-magnetic. |
Are Gold and Silver Coins Magnetic?
US gold and silver coins are not magnetic. American Gold Eagles (22k), American Gold Buffalos (24k), Morgan and Peace silver dollars (90% silver), and pre-1965 silver quarters and dimes all fail the magnet test — exactly what they should do.
A few coin facts worth knowing:
- 1943 US pennies are zinc-coated steel and stick strongly. They look silver, not gold — wartime steel cents.
- Modern Canadian coins often have steel cores and are magnetic. Vintage Canadian gold and silver coins are not.
- Counterfeit American Gold Eagles sometimes use a tungsten core, which is non-magnetic. The magnet test alone won't catch them. Specific gravity or XRF is required.
Two Blind Spots You Need to Know
The magnet test catches plated steel and obvious counterfeits, but two categories of fake will pass. For anyone buying or selling at higher dollar values, these matter.
Tungsten-core counterfeits
Tungsten has nearly the same density as gold (19.25 vs 19.32 g/cc) and is non-magnetic. A tungsten bar wrapped in a thin gold shell passes both visual and magnet tests. Most often seen in 1 oz and 10 oz bars from unregulated marketplaces. Defenses: XRF, ultrasound thickness gauges, or buying only from vetted dealers.
Brass and bronze
Brass (copper + zinc) and bronze (copper + tin) are non-magnetic. A brass ring with a gold finish passes the magnet test even though it contains zero gold. Catch these with the hallmark check, the skin test, or the acid test.
If Your Gold Is Real, Here's What to Do
Passed the magnet test, has a karat stamp, and feels heavy in your hand? It's very likely real gold. The next question is value.
Gold prices change every minute. Use our gold price calculator to enter the karat and weight of your piece and see exactly what the gold content is worth at the live market.
A few rules of thumb when you're ready to sell:
- Get at least three offers. Pawn shops typically pay 40–60% of melt. Online refiners pay 70–85%. Local coin and gold buyers pay 80–95%.
- Know the spot price before you walk in. Any quote that doesn't reference live spot is hiding something.
- Weigh it yourself. A $10 gram scale protects you from a thumb on the buyer's scale.
- Ask about the spread. An honest dealer will tell you the gap between buy and sell. Ours is among the lowest in the industry.
Related Guides
How to Tell If Gold Is Real
8 at-home tests that actually work — a deeper look at every authentication method.
Gold Karat Guide
10k vs 14k vs 18k vs 24k — what each karat actually means for value.
How Much Does a Gold Bar Weigh?
Standard bar sizes and weights from 1 gram to 400 ounces.
Gold Price Calculator
Get the live value of your gold by karat and weight.
Frequently Asked Questions
Is real 14k gold magnetic?
Will a magnet stick to gold?
What is the fastest way to test gold?
Does real gold stick to a magnet?
Is gold-plated jewelry magnetic?
Is white gold magnetic?
Are 24k gold bars magnetic?
Not Sure If Your Gold Is Real?
Bring it in. We test every piece with a professional XRF analyzer. Free, no appointment, no obligation to sell.