That “gold” necklace from a flea market, the diamond ring in grandma’s jewelry box, the “sterling silver” bracelet from an online seller — is any of it real? Counterfeit jewelry is a multi-billion-dollar business, and fakes get better every year. Here’s how to separate the genuine article from clever imitations, starting with tests you can do at home.
1. Check the Hallmarks
Real precious-metal jewelry is almost always stamped with a hallmark indicating its purity. Grab a magnifying glass or jeweler’s loupe and look inside rings, on clasps, or on earring posts for:
- Gold: 10K, 14K, 18K, 22K, 24K (or 417, 585, 750, 916, 999 in European millesimal marks)
- Silver: 925 (sterling), 800, or “STER”
- Platinum: 950, PLAT, or PT
No stamp doesn’t automatically mean fake — very old or handmade pieces may lack marks — but a missing hallmark on a supposedly new “14K gold” chain is a major red flag. The FTC’s jewelry guides explain what sellers are legally required to disclose about precious metals.
2. The Magnet Test
Gold, silver, and platinum are not magnetic. Hold a strong magnet (a refrigerator magnet won’t cut it — use a neodymium magnet) near the piece. If it sticks, the item is either fake or heavily alloyed with magnetic base metals. Caveat: some clasps and springs contain steel, so test the main body of the piece, not the clasp.
3. The Weight and Feel Test
Precious metals are dense. Real gold feels surprisingly heavy for its size; fakes made of brass, aluminum, or plated base metals feel light and “tinny.” Silver is similarly weighty. With experience, jewelers can often spot a fake just by hefting it. Gold is weighed in grams and troy ounces, which is why jewelers talk weight the way they do — handy context if you’re also wondering how many grams are in a half ounce“>how many grams are in a half ounce.
4. The Skin Test
Wear the piece for a few hours. Cheap base metals (especially nickel and copper alloys) often leave green or black marks on skin as they oxidize against sweat. Real gold (14K and up) and sterling silver rarely discolor skin — though note that even genuine silver can tarnish, which is different from skin staining.
5. The Ceramic Scratch Test (Use Caution)
Drag the piece lightly across an unglazed ceramic tile. Real gold leaves a gold-colored streak; fake gold-plated items leave a black or gray streak as the plating wears through. Warning: this can scratch the jewelry, so only try it on pieces you don’t mind marking.
6. Diamond-Specific Checks
For stones: real diamonds fog briefly when you breathe on them (the fog clears almost instantly due to high thermal conductivity), while fakes stay foggy longer. Also check the setting — real diamonds are almost never set in cheap base metals. A “diamond” in a flimsy stamped setting is suspicious on its face.
7. Get a Professional Appraisal
Home tests narrow things down, but only a qualified jeweler or gemologist with proper equipment (acid test kits, electronic gold testers, refractometers) can give you a definitive answer. Expect to pay $50–$150 for a written appraisal — worth it for anything you believe is valuable. The Gemological Institute of America (GIA) can help you find accredited professionals and explains grading standards in depth.
Red Flags That Scream “Fake”
- Price far below market value (“$20 for a 2-carat diamond ring!”)
- No hallmarks, or blurry/misspelled stamps
- Plating wearing off at edges, revealing a different-colored metal
- Seller refuses returns or won’t provide certification
- “Gold” that sticks to a magnet
Understanding Gold Purity: Karats Explained
Gold purity is measured in karats, where 24K is pure gold. But pure gold is too soft for everyday jewelry, so it’s alloyed with other metals for strength — which is why 14K (58.5% gold) and 18K (75% gold) dominate the market. Lower karat means more durable but less valuable; higher karat means richer color but softer metal that scratches easily. White gold is gold alloyed with palladium or nickel and usually rhodium-plated for that bright white finish — when the plating wears, a yellowish tint appears, which is normal and not a sign of fakery.
Silver, Platinum, and Other Precious Metals
Sterling silver (925) is 92.5% silver — pure silver is too soft to hold its shape. Platinum jewelry is typically 950 (95% pure) and is denser and heavier than gold, with a naturally white luster that never needs plating. Palladium (often stamped 950 or 500) has grown popular as a lighter, cheaper platinum alternative. Knowing these standards helps you judge whether a piece’s weight and markings make sense together.
Common Scams and How They Work
Watch for gold-filled vs. gold-plated confusion: gold-filled has a much thicker gold layer (at least 5% of total weight) and lasts years, while gold-plated has a microscopic coating that wears off in months — yet sellers sometimes blur the distinction. Vermeil means gold-plated sterling silver, which is legitimate if disclosed. “German silver” and “nickel silver” contain no silver at all. And be wary of inflated “appraisal values” on certificates from the seller themselves — always get an independent appraisal for significant purchases.
Frequently Asked Questions
Does real gold stick to a magnet?
No. Pure gold is non-magnetic. If your “gold” jewelry sticks to a strong magnet, it’s fake or low-quality alloy.
What does 925 mean on jewelry?
925 means sterling silver — 92.5% pure silver mixed with 7.5% other metals (usually copper) for strength.
Can fake jewelry have real hallmarks?
Unfortunately, yes. Counterfeiters sometimes stamp fake marks. That’s why you should combine hallmark checks with other tests.
How much does a jewelry appraisal cost?
Typically $50–$150 per item for a written appraisal from a qualified gemologist.
Will real silver turn my skin green?
Rarely. Green marks usually come from copper or nickel in cheap base metals, not genuine sterling silver.
Is 14K gold real gold?
Yes — 14K gold is 58.5% pure gold alloyed with other metals for strength. It’s the most common purity for fine jewelry in the US.
Does stainless steel jewelry have any value?
As metal, very little — but quality stainless pieces are durable and hypoallergenic, making them fine for fashion jewelry.
Have a tangled chain to deal with too? See our guide on how to untangle a necklace“>how to untangle a necklace without damaging it.
