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How to Tell If Gold Is Real
Three home checks are genuinely informative, several popular ones are not, and one question can only be answered by a jeweler.
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The short answer
Check the hallmark first (10K, 14K, 585, 750), then the magnet test - gold is not magnetic - then weight for size, since gold is very dense. None of these distinguishes solid gold from thick plating; only a jeweler can.
What to buy
| # | Pick | Material | Score | Price |
|---|---|---|---|---|
| 1 |  Belacqua 1/2 Carat Lab-Grown Diamond Stud Earrings, 14K Yellow Gold Solid 14K gold from a listing that states it plainly - no ambiguity to test for Top pick | Lab-grown diamonds set in solid 14K yellow gold. Lab-grown diamonds are real diamonds - same carbon, same crystal structure, same Mohs 10 hardness. The gold is solid, not plated or filled.Best verified solid gold | 9.2/10 | |
| 2 |  Kooljewelry 14k Gold Filled Cable Chain Necklace Gold-filled, stated in those words - a legally defined claim you can rely on | 14K gold-filled (1.5mm cable, 18in). Gold-filled means a bonded gold layer that is at least 5% of the item's total weight - a legal definition under the FTC jewelry guides, not a marketing phrase.Best verified gold-filled | 8.8/10 | |
| 3 |  14k Gold Filled Rope Chain Necklace, 20in Heavy gold-filled where the weight-for-size test tells you something real | 14K gold-filled rope chain, 20in. Same 5%-by-weight gold-filled standard as the cable chain, in a heavier braided link.Best weight test example | 8.1/10 |
The hallmark is the first and best check
Solid gold is stamped, because the stamp adds value and manufacturers do it as a matter of routine. Look on the clasp, the inside of a band or the back of a pendant.
| Mark | Meaning | Solid? |
|---|---|---|
| 10K / 417 | 41.7% gold - the US legal minimum | Yes |
| 14K / 585 | 58.3% gold | Yes |
| 18K / 750 | 75% gold | Yes |
| 22K / 916 | 91.7% gold | Yes |
| 14K GF / 1/20 14K GF | Gold-filled - a bonded layer at 5% of weight | No - bonded layer |
| 1/40 14K RGP | Rolled gold plate - half the gold of gold-filled | No |
| GP / GEP / HGE | Gold plated / electroplated | No - a coating |
| Vermeil | Gold over sterling, min 2.5 microns | No - a coating on silver |
| No mark at all | Unknown - assume not solid | Probably not |
The letters after the number are what matter. A karat figure followed by GF, GP, GEP, HGE or RGP describes a surface, not the object.
The tests that work
Magnet. Gold is not magnetic. A piece firmly attracted to a strong magnet is not solid gold - though a non-magnetic piece is not necessarily gold either, since brass, steel of some grades and many other metals are also non-magnetic. It rules out rather than confirms.
Weight for size. Gold is very dense - considerably heavier than brass or steel at the same dimensions. A chain that looks substantial and feels light is unlikely to be solid gold. This is a genuinely useful feel test.
The price sanity check. This is the most reliable check available to a buyer online. Solid gold has an irreducible metal cost at any given size. A wide chain priced in the low hundreds cannot be solid gold, because the raw metal alone would cost multiples of that. When the price and the claim disagree, the price is telling the truth.
The tests that do not work
- The bite test. Folklore. You will mark soft metals that are not gold and damage your teeth, and modern alloys are hard enough that it proves nothing.
- The ceramic scratch test. Dragging a piece across unglazed ceramic to check the streak color damages the item, and gives an unreliable result on plated pieces, where you may only be scratching the coating.
- The vinegar test. Widely repeated, unreliable, and it can damage the piece and any stones in it.
- “It has not tarnished so it must be gold.” Stainless steel, titanium and rhodium-plated pieces do not tarnish either.
The question you cannot answer at home
None of these home checks distinguishes solid gold from heavy gold plating over a non-magnetic base. The surface is real gold in both cases, the magnet says nothing, and a well-made plated piece can feel reasonably substantial.
Only a jeweler can settle it, using acid testing, electronic conductivity testing or X-ray fluorescence. For anything of real value - an inherited piece, a purchase you are unsure about - that is worth doing rather than guessing.
Every pick in detail
What each one is actually made of, how long it realistically lasts in that material, who it is for and who should skip it.
1 · Best verified solid gold
Belacqua 1/2 Carat Lab-Grown Diamond Stud Earrings, 14K Yellow Gold
The first item here where nothing is a coating and nothing clouds. That is what the price is buying.
- What it is
- Lab-grown diamonds set in solid 14K yellow gold. Lab-grown diamonds are real diamonds - same carbon, same crystal structure, same Mohs 10 hardness. The gold is solid, not plated or filled.
- Realistic lifespan
- Effectively permanent. Mohs 10 stones in solid 14K gold is the only combination on this site with no wear-limited component at all.
- 0.5ct total
- Mohs 10
- solid 14K gold
What works
- Solid gold settings - no plating to wear off, ever
- Real diamonds at a fraction of mined-diamond pricing
- Nothing on this product has a countdown attached to it
What does not
- Lab-grown diamond resale is thin and prices have fallen steadily
- The most expensive earrings on the site by a wide margin
Skip it if: you are buying for resale or as a store of value. Lab-grown prices have been falling; buy these to wear for thirty years, which they will.
#ad how we make money · price as of September 7, 2026
Best for buying earrings once. Score 9.2/10 from published specifications.
2 · Best verified gold-filled
Kooljewelry 14k Gold Filled Cable Chain Necklace
The clearest gold-filled starter chain in the set - the listing says gold-filled in those words, which is most of what you are paying for.
- What it is
- 14K gold-filled (1.5mm cable, 18in). Gold-filled means a bonded gold layer that is at least 5% of the item's total weight - a legal definition under the FTC jewelry guides, not a marketing phrase.
- Realistic lifespan
- Gold-filled worn daily typically holds its color 10-30 years. Assumes daily wear, removal for swimming, and no repeated chemical contact.
- 1.5mm cable
- 14K gold-filled
- 18in
What works
- Unambiguous gold-filled labeling - the material claim is checkable
- Cable link is the most repairable chain style if a link ever opens
- Gold-filled tolerates sweat and daily wear in a way plating does not
What does not
- Costs roughly twice a plated chain of the same look
- 1.5mm is dainty; it will not read as a statement chain
Skip it if: you change chains with the season. For a one-season trend piece a $12 plated chain is the rational purchase and we would not talk you out of it.
#ad how we make money · price as of September 7, 2026
Best for a first chain you want to still own in ten years. Score 8.8/10 from published specifications.
3 · Best weight test example
14k Gold Filled Rope Chain Necklace, 20in
A heavy gold-filled rope at a heavy price. Buy it for the weight and the material, not for a bargain.
- What it is
- 14K gold-filled rope chain, 20in. Same 5%-by-weight gold-filled standard as the cable chain, in a heavier braided link.
- Realistic lifespan
- 10-30 years of regular wear for the gold layer. Rope links are the most abrasion-prone style, so friction points at the back of the neck wear first.
- rope link
- 14K gold-filled
- 20in
What works
- Real gold-filled weight - this is the chain plating is imitating
- Rope link hides small scratches better than a flat chain
What does not
- The most expensive chain in this set by a wide margin
- Rope links are difficult to repair cleanly if one goes
Skip it if: your budget is under $100. At that price you are better served by a plain gold-filled cable chain than by stretching for a rope.
#ad how we make money · price as of September 7, 2026
Best for a substantial everyday chain in a material that will outlast plating many times over. Score 8.1/10 from published specifications.
Common questions
Does real gold stick to a magnet?
No. Gold is not magnetic, so a piece firmly attracted to a strong magnet is not solid gold. But a non-magnetic piece is not automatically gold - brass and many other metals are also non-magnetic.
What does 585 mean on jewelry?
585 parts per thousand gold - 58.5% - which is the millesimal way of writing 14K. It indicates solid gold, unlike a karat number followed by GF, GP or HGE.
Can gold plated jewelry have a karat stamp?
Yes, and this is the main source of confusion. A stamp reading “18K GP” or “14K GF” is describing the coating or bonded layer. Always read the letters after the number.
How can I be certain a piece is solid gold?
Have a jeweler test it. Acid testing, electronic conductivity testing and X-ray fluorescence all give a definitive answer, and XRF is non-destructive. Home tests can rule things out but cannot confirm.
Sources
Every specification and figure on this page traces to one of these. Where a source does not publish a number, the page says so rather than estimating one.
- 16 CFR 23.3 - Misrepresentation as to gold content (FTC Jewelry Guides) — Defines the gold-plate minimum (0.175 microns), heavy gold electroplate (2.5 microns) and the gold-filled 1/20th-by-weight threshold.
- 16 CFR 23.4 - Misuse of the word 'vermeil' — Vermeil requires a sterling silver base, gold of at least 10 karat fineness, and a minimum 2.5 microns throughout.
- 16 CFR Part 23 - Guides for the Jewelry, Precious Metals, and Pewter Industries — The full FTC Jewelry Guides, which govern every material claim quoted on this site.
Read next
- Real gold vs plated: how to tell
The specific comparison this page cannot resolve at home.
- Gold karat explained
Every mark, decoded.
- Gold filled vs vermeil vs plated
What each of those letters after the karat means.
- How to read a jewelry listing
Spotting the problem before you buy rather than after.