How to Tell if Gold Jewelry Is Real: A Simple At-Home Guide

The fastest reliable check is the hallmark stamp — real gold jewelry sold in Canada should be marked with its purity, usually as "10K," "14K," "18K," or the equivalent numeric stamp like "585" (14K) or "750" (18K), typically found on the clasp, inner band, or post. No stamp at all is a red flag, though a stamp alone doesn't guarantee purity either — counterfeiters can fake stamps too. Here's the fuller picture, including which home tests are actually useful and which ones you shouldn't rely on.

Start with the hallmark

Check the inside of a ring band, the clasp of a chain or bracelet, or the post of an earring for a small stamped number. In Canada, legitimate gold jewelry should carry a purity mark — common ones are 10K, 14K, 18K, 22K, 24K, or their metric equivalents (417, 585, 750, 916, 999). If you genuinely can't find any mark under good light or a loupe, that's worth asking about before buying, particularly from a private seller or secondhand source.

Worth knowing: Canada's Precious Metals Marking Act sets legal requirements for how gold sold in Canada must be marked, which is one advantage of buying from an established Canadian jeweler over an unregulated overseas online marketplace — the hallmark obligations, and recourse if something's misrepresented, are clearer.

The magnet test

Gold is not magnetic, so if a strong magnet noticeably pulls or attracts your piece, it likely contains base metals like iron or steel rather than being solid gold. This test is useful for ruling pieces out — a magnetic reaction is a clear red flag — but passing the magnet test doesn't confirm a piece is real gold, since several non-gold metals (brass, some stainless steels) also aren't magnetic.

The vinegar test

A few drops of plain vinegar on an inconspicuous spot shouldn't visibly change real gold — it doesn't react with acetic acid. If the metal discolours, tarnishes, or changes shade within about 15 minutes, that suggests base metal underneath a thin plating rather than solid gold through. Rinse and dry the piece afterward regardless of the result.

The skin test

Hold the piece against clean, dry skin for several minutes, particularly somewhere with natural moisture like your palm. Real gold generally won't cause discoloration; a greenish or blackish mark left on your skin usually indicates a base metal alloy reacting with sweat, which is more common in lower-quality or heavily plated pieces.

What these tests can't tell you

None of these home methods can distinguish between different gold purities (10K vs. 18K, for instance), and none of them can reliably catch a well-made gold-plated fake with a thick, high-quality plating layer — plating has gotten good enough that some home tests genuinely can't catch it. If you're making a real decision about a valuable or inherited piece — buying, selling, or insuring it — a professional acid test or electronic gold tester at a jeweler is the only way to get a confident answer, and it takes only a few minutes.

This matters most in exactly the situations where you'd want to be sure: before insuring a piece (see our guide on jewelry insurance in Canada, which requires an accurate appraisal), before selling or trading in old gold, or when you've inherited jewelry with no paperwork.

Buying new — how to avoid the question altogether

The simplest way to never need these tests is to buy from a jeweler who provides documentation of purity at the time of sale and stands behind it. Every piece we sell is accurately marked and documented, which is the difference between "probably real" and actually knowing.

Frequently Asked Questions

What hallmark stamps indicate real gold? Common purity stamps include 10K, 14K, 18K, 22K, and 24K, or their metric equivalents (417, 585, 750, 916, 999). No stamp at all, or an unfamiliar or inconsistent stamp, is worth further investigation.

Is the magnet test a reliable way to check if gold is real? It's useful for ruling pieces out — if a piece is strongly magnetic, it's not solid gold — but passing the test doesn't confirm authenticity, since several non-gold metals also aren't magnetic.

Can home tests detect gold-plated fakes? Not reliably. High-quality gold plating can pass basic home tests. A professional acid test or electronic gold tester at a jeweler is the only reliable way to confirm purity on a piece you're uncertain about.

Do I need to test gold jewelry before insuring it? You'll need an accurate appraisal, which includes purity verification, before scheduling a piece on an insurance policy. This is best done by a professional rather than relying on home tests.

Have a piece you're unsure about — inherited, secondhand, or just unmarked? Bring it in and we can test it properly in a few minutes.