How to Tell if Jewelry Is Real Gold: Marks, Simple Checks and When to Ask a Jeweler

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Jessie Guerrero

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You found a chain in a drawer, inherited a ring, or bought a bracelet that looks the part at a price that seems too good. The question is the same each time: is it real gold? The honest answer is that no single home trick settles it. What you can do is stack a few low-risk checks, read the markings correctly, and know when a professional test is worth the small effort.

This guide walks through that order: first the stamp, then what the stamp means, then simple checks you can do without damaging anything, then the checks to skip.

Start with the stamp

Look closely for a small mark on the piece. A magnifying glass or your phone's camera zoomed in helps, because the marks are tiny.

Gold purity is described in karats, and a karat is a fraction: parts of gold per 24 parts of metal. That is why you will see two styles of marking:

Karat mark Millesimal mark Gold share (nominal)
24K 999 essentially pure
22K 916 about 91.7%
18K 750 75%
14K 585 about 58.3%
10K 417 about 41.7%

The 14K figure is worth a note: 14 divided by 24 is 58.33%, and "585" is the rounded number commonly stamped on the piece.

So a ring stamped 14K is not "less real" than one stamped 18K. It is real gold alloyed with other metals, such as copper or silver. Pure gold is a soft, malleable metal, and alloying is one way to change its hardness and other properties, which is why karat gold is so common in jewelry.

Marks are a clue, not proof

A stamp is a marking on the piece, not a test result, so only testing can confirm the metal underneath. In the United States, the Federal Trade Commission's Jewelry Guides say a product made throughout of a gold alloy may be described as "Gold" when the word is immediately preceded by the correct karat designation, such as "14 Karat Gold." The FTC's consumer guidance also advises looking for the name or U.S. registered trademark of the company that stands behind the karat mark. Treat a missing or unclear mark on a piece sold as gold as a reason to ask questions.

Know the look-alike terms

Many pieces that look gold are not solid gold, and the wording on the tag matters. These are the terms you are most likely to meet:

  • Gold plated or gold electroplated. A layer of gold over another metal. Under the FTC's Jewelry Guides, an electroplating of gold or of a gold alloy of not less than 10 karat fineness can be called "Gold Electroplate" or "Gold Plated" if it has a minimum thickness throughout equivalent to 0.175 microns (approximately 7 millionths of an inch) of fine gold. The FTC's consumer guidance notes that plating wears away over time. If a seller uses unclear terms such as "gold flashed" or "gold washed," the FTC advises asking the seller to explain them.
  • Gold plate, gold overlay or rolled gold plate (mechanical application). The Guides allow these terms for a plating of gold alloy of not less than 10 karat fineness, affixed by soldering, brazing, welding or other mechanical means, when the plating makes up at least 1/40th of the weight of the metal in the entire article.
  • Gold filled. Under the same Guides, the term "Gold Filled" may be used when that gold alloy layer makes up at least 1/20th of the weight of the metal in the entire article. It is still a layer over another metal, not solid gold.
  • Vermeil. Under the FTC rules, a base of sterling silver coated with gold alloy of not less than 10 karat fineness, at a minimum thickness equivalent to 2.5 microns of fine gold.
  • Solid gold. The FTC's consumer guidance says "solid gold" means the item isn't hollow. Under the Guides, a gold alloy product with a hollow center should not be marked or described as "solid."

If a listing says only "gold tone," "gold color" or "gold finish," it gives no karat and no construction, so ask the seller what the piece is made of.

Simple checks you can do at home

None of these is a laboratory test. Used together, they can tell you whether a piece deserves a closer look.

1. Check the marks together. Look for a karat mark (such as 14K or 18K) and, beside it, a company name or registered trademark. The FTC's consumer guidance advises looking for both.

2. Check for wear. Plating wears away over time, so on a plated piece a different-looking base metal may show through where the gold has worn. A piece made throughout of gold alloy has no other metal underneath. A color change alone is not conclusive, so treat it as a prompt for a second check.

3. Try a magnet. Gold is diamagnetic, so a solid gold item should not be pulled toward a magnet. If the main body of your piece is clearly pulled toward a magnet, treat that as a strong sign it is not solid gold. Test the piece itself rather than a clasp or other small fitting, and ask a jeweler if you are unsure. The reverse does not hold: a piece that is not pulled toward the magnet is not proven to be gold.

4. Compare weight and size. Gold is dense, with a density of about 19.3 g/cm³. A piece that feels surprisingly light for its size, such as a chunky ring that weighs next to nothing, may be hollow or may be a different metal. Hollow gold jewelry exists and can be legitimate, so use this as a prompt for a question, not as a verdict.

Checks to skip

  • Home density tests. In a GIA study that compared four gold-testing methods, density measured by hydrostatic weighing was the least suitable. Hollow pieces also throw density off.
  • Acid kits and scratching the surface. Touchstone (acid) testing uses acids, and GIA's bench guidance calls for gloves, goggles and good ventilation. It can also call for a small notch in the piece, so it leaves marks.

When to see a professional

If the piece is valuable, sentimental, or you plan to sell it, a professional test is worth it. Widely available methods include touchstone (acid) testing, electronic gold testers and X-ray fluorescence; a GIA study found these useful within certain limitations, and found that none of the methods it compared reliably determined gold content within the tolerance allowed by U.S. law. Ask what method was used, and ask for the result in writing if you are selling or insuring the piece.

Buying new: avoid the question altogether

Most uncertainty is avoidable at the point of sale. Before you buy:

  1. Look for a stated karat (such as 14K or 18K) and a plain description, not only "gold tone."
  2. Ask whether the piece is solid, hollow, gold filled, plated or vermeil.
  3. Check the return policy and ask for a receipt that lists the metal and karat.
  4. Be cautious when the price is far below that of comparable solid gold pieces of similar weight.

A quick decision guide

  • Stamp present, magnet does nothing, no worn-through color: a good sign, but only a test can confirm it.
  • Body of the piece clearly pulled toward a magnet: very likely not solid gold.
  • No stamp, or light for its size: ask the seller or a jeweler questions before relying on it.
  • Not sure: get one professional opinion before you sell, insure, or resize it.

Real gold is not about a trick, it is about a short, patient process: read the mark, understand what it promises, rule out the obvious fakes, and let a professional confirm anything that matters. If you want to style the piece once you know what it is, our guides on styling gold jewelry and choosing between gold and silver are a good next step.

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