How to tell if gold is real: 5 safe checks at home

To tell if gold is real, start with the stamp: look for a karat mark such as 14K or 585. Then check the color where the piece wears, hold a strong magnet to it and judge its weight. Those four checks catch most fakes in a few minutes. None of them is proof on its own, though. Only a jeweler’s acid or XRF test confirms how much gold a piece contains.

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How to tell if gold is real at home: 5 safe checks

Work through these in order, with good light and your phone’s camera zoomed in as a magnifier. Mark each check as you go. A single failed check is reason enough to have a jeweler look at the piece.

Your at-home checklist

1. Find the karat stamp. Real gold is usually marked with its karat (10K, 14K, 18K) or its fineness in parts per thousand (417, 585, 750). Marks such as GP, GEP, HGE, RGP, GF or 1/20 mean plated or gold filled, not solid gold.
2. Check the color where it wears. Look at the edges, the clasp, the inside of a ring band and the links that rub together. Gold is the same color all the way through. Plating wears to a silver, gray or coppery tone at exactly those points.
3. Hold a strong magnet to it. Gold is not magnetic. If the piece jumps to a strong magnet, there is iron, nickel or steel inside. Test the links or the band, not the clasp: many clasps hide a tiny steel spring.
4. Weigh it in your hand. Gold is dense, so solid gold feels heavier than it looks. A chunky chain that feels almost weightless is either hollow (still gold, just less of it) or not gold at all. Compare it with the weight in grams the seller lists.
5. Check the seller and the paperwork. A real gold piece should come with a stated karat, a weight and a receipt or certificate of authenticity. A price far below the value of the gold is the loudest warning sign of all.

Plated and gold filled pieces often pass one or two of these checks and fail the rest, which is why it pays to do all five.

What do gold stamps mean? 14K, 585 and more

A gold stamp is a tiny mark, often smaller than a grain of rice, that tells you the karat or the fineness of the metal. Where you find it depends on the piece.

Where to find the stamp

• Chains and bracelets: on the clasp, or on the small flat tag right beside it.
• Rings: inside the band, usually at the bottom where it sits against your palm.
• Pendants: on the back of the pendant or on the bail, the small loop the chain runs through.

Once you find it, here is how to read it:

Stamp	What it means
10K or 417	41.7% pure gold
14K or 585	58.5% pure gold
18K or 750	75% pure gold
24K or 999	99.9% pure gold
GP, GEP, HGE, RGP	Gold plated or electroplated: a thin gold layer over another metal
GF, 1/20 12K GF	Gold filled: a thicker layer of gold bonded to a base metal core
925 with a gold color	Sterling silver, often gold vermeil (silver with a gold layer)

For a closer look at the most common mark, read what 14K gold and the 585 stamp mean.

Can gold be real without a stamp?

Yes. Stamps wear away over decades, disappear when a ring is resized, and some older or small-workshop pieces were never stamped at all. A missing stamp is a reason to test the piece, not proof that it is fake.

The reverse is also true: a stamp can be faked. In the US, a karat mark is supposed to sit beside the maker’s trademark, so a lone “14K” with no maker’s mark on a bargain piece deserves a second look.

Real gold vs. plated vs. gold filled: what each check shows

Here is what you can expect to see from each type of gold jewelry when you run the five checks above.

Check	Solid gold	Gold filled	Gold plated
Stamp	Solid gold 10K–24K or 417–999	Gold filled GF, 1/20 or 1/10 with a karat	Gold plated GP, GEP, HGE, RGP, or none
Wear points	Solid gold Same color all the way through	Gold filled Holds up for years, can wear through eventually	Gold plated Base metal shows at edges and clasp
Magnet	Solid gold No pull	Gold filled Usually no pull (brass core)	Gold plated Pull if the core is steel or nickel
Weight	Solid gold Heavy for its size	Gold filled Lighter than solid gold	Gold plated Light for its size
Price	Solid gold Tracks the value of the gold	Gold filled A fraction of solid gold	Gold plated Costume jewelry prices

If the words themselves are the confusing part, our guide to solid gold vs. gold plated vs. gold vermeil explains each one.

At-home gold tests to skip

You will find these all over the internet. They are unreliable, and some of them can damage a real piece of gold, so we don’t recommend any of them.

• Vinegar or lemon juice: gold doesn’t react, but neither does good plating or stainless steel in a short soak, so “passing” proves very little. The acid can also harm stones and base metals.
• Toothpaste or a ceramic tile scratch: both work by grinding metal off your piece. A plated piece still leaves a gold streak until the plating is gone.
• Biting it: it can dent real gold, and soft metals such as lead dent too, so the bite mark tells you nothing.
• A lighter or flame: heat can discolor gold alloys, crack stones and weaken solder joints, and a thin plating can survive a quick flame.
• The float test: nearly all jewelry sinks in water, gold or not.

How a jeweler tests gold

A jeweler can tell you in minutes what a piece is made of. These are the tests you are most likely to see:

1. Acid test: the jeweler rubs the piece on a black touchstone to leave a thin streak, then applies acids of known strength to the streak. Whether the streak stays or dissolves shows the karat, and the piece itself only loses a trace of metal.
2. Electronic gold tester: a probe measures how the metal conducts a small current and gives a karat reading. It is quick, but plating can confuse it.
3. XRF (X-ray fluorescence): a desktop analyzer reads the exact mix of metals without touching the piece. Because it reads the surface, a jeweler may combine it with another test on plated or filled pieces.
4. Fire assay: the most exact method of all, but it melts a sample, so it is used for bullion and refining, not for jewelry you want to keep.

How to know you are buying real gold online

Online, you can’t hold the piece before you buy, so read the listing the way a jeweler would. Look for the karat and the stamp, the weight in grams, a plain statement of whether a chain is solid, semi-hollow or hollow, and a return policy that lets you have the piece tested at home.

Here is how we handle it at Heon. Every piece is 14K gold (58.5% pure gold), stamped 585, never plated or filled, and ships with a certificate of authenticity. Our chain pages list the weight in grams and say how each chain is made: our herringbone chain is solid, while chains such as the rope chain necklace and the Miami Cuban link chain are semi-hollow. Our guide to solid vs. hollow gold chains lists every one.

Shipping is free and insured, and returns are free within 30 days (custom-engraved and personalized pieces are final sale), so you are welcome to take your piece to a local jeweler and have it tested. Once it is yours, our guide to cleaning 14K gold jewelry keeps it shining, and our 14K gold gift guide helps if you are buying for someone else.

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