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How to spot fake gold
From plated jewelry to tungsten-filled bars, fakes come in many forms. Learn which home checks help, which professional tests are reliable and the warning signs that should make you walk away.
This page is general education, not financial advice. No home test is foolproof. For valuable items, use a reputable dealer or professional assayer.
Why fakes are a real risk
Gold's high value makes it a target for counterfeiters. Fakes range from cheap plated jewelry sold as solid gold to sophisticated counterfeit coins and bars. The most dangerous fakes use tungsten, because its density is almost identical to gold's.
| Metal | Density (g/cm3) |
|---|---|
| Gold | 19.3 |
| Tungsten | 19.3 |
| Lead | 11.3 |
| Silver | 10.5 |
| Copper | 9.0 |
| Brass | About 8.5 |
A tungsten core plated or wrapped with gold can pass simple weight checks. That is why serious buyers rely on more than one test.
Quick checks anyone can do
| Check | What it can reveal | Limits |
|---|---|---|
| Buy from reputable sources | Avoids most fakes in the first place | The most important step |
| Weight and dimensions | Wrong weight, diameter or thickness for the product | Tungsten fakes can match weight |
| Magnet | Gold is not magnetic; strong attraction means a ferrous metal | Many fakes are not magnetic either |
| Ping or ring test (coins) | Genuine coins ring with a clear tone | Requires experience and comparison |
| Look at the details | Blurry designs, wrong fonts, bad edges | Good fakes can look excellent |
| Check hallmarks | Missing or inconsistent stamps | Stamps can be faked. See hallmarks |
Use official specifications from mints or refiners for weight, diameter and thickness, and measure with a precise scale and calipers.
Professional tests
| Test | How it works | Notes |
|---|---|---|
| X-ray fluorescence (XRF) | Measures surface composition without damage | Excellent for alloys, but only reads the surface layer |
| Electrical conductivity or resistivity devices | Measure conductivity, which can reveal a different metal inside | Can detect many plated or filled fakes |
| Ultrasonic testing | Sends sound through bars to find internal differences | Useful for tungsten-filled bars |
| Specific gravity (water displacement) | Compares weight in air and water to calculate density | Accurate, but cannot detect tungsten alone |
| Acid testing | Scratches a sample on a stone and applies acids of known strength | Damages the surface slightly; tests only the outer layer |
| Fire assay | Melts a sample to measure exact gold content | The most accurate; destructive |
See assaying for more on fire assay.
Jewelry fakes
For jewelry, the most common problem is not counterfeiting but misrepresentation: plated or gold-filled items sold as solid gold, or 10K sold as 14K. Look for:
- Worn spots where a different color shows through.
- Stamps like GP, GEP, HGE or RGP, which indicate plating. See plated, filled and vermeil.
- Prices that are too low for the claimed karat and weight.
Warning signs
- Prices below spot. Nobody sells genuine gold below its metal value for long.
- Pressure to decide quickly.
- Private sellers with no history on marketplaces or social media.
- Unusual payment requests, such as gift cards or wire transfers to individuals.
- Missing or mismatched certificates, or assay cards with odd packaging.
- Reluctance to allow testing.
What to do if you suspect a fake
- Stop the transaction if possible.
- Have the item tested by a reputable dealer or assayer.
- Keep all records, messages and receipts.
- Report fraud to the platform, your payment provider and local authorities.
Best protection
The best defense is buying from established dealers and mints with clear return and buyback policies, and keeping receipts. See buying gold safely.
Learn what genuine items look and feel like by examining verified coins at a reputable dealer. Familiarity makes fakes easier to spot.
