You can't bite-test a necklace before buying it online, and honestly, that test never told anyone much anyway. Real silver authentication comes down to a handful of specific checks — a stamp, a magnet, a reaction to air — most of which you can do the moment your order arrives.
What "925" actually means
925 sterling silver is 92.5% pure silver alloyed with 7.5% other metal, almost always copper, for strength. Pure silver alone is too soft to hold its shape in daily-wear jewelry — the alloy is what makes a ring or chain durable. The "925" stamp is an industry-standard hallmark indicating that ratio, and premium sterling silver pieces should carry it somewhere on the piece, usually on a clasp, the inside of a band, or a tag.
Checks you can do before buying
- Look for the 925 stamp in product photos. Sellers will usually show or mention it.
- Check the price against the category. Premium 925 silver has a real material cost — a price far below what similar solid silver pieces typically sell for is a signal, not a bargain.
- Look for GRA or brand-specific certification language on stone-set pieces, which typically only accompanies premium, higher-grade materials.
Checks you can do once it arrives
Look closely at clasps, the inside of rings, or near earring posts. A magnifying glass or phone camera zoom helps — the stamp is often small.
Silver is not magnetic. If a strong magnet visibly attracts the piece, it likely contains base metals like iron or steel rather than genuine silver.
Genuine sterling silver tarnishes slowly over weeks or months with air exposure and polishes back to bright silver. Fake silver-plated base metal tends to discolor unevenly or flake rather than tarnish uniformly.
A light, even yellowish or grey dulling over time is normal sterling silver tarnish — polish it and the original shine returns. Green marks on your skin, flaking coating, or a coppery color showing through underneath are signs of base-metal plating, not sterling silver.
Real silver vs. fake — quick comparison
| Genuine 925 Silver | Silver-Plated Base Metal | |
|---|---|---|
| Hallmark | Stamped "925" somewhere on the piece | Often unstamped, or a vague "silver-tone" description |
| Magnet response | Not magnetic | May be magnetic if the base is steel or iron |
| Tarnish behavior | Even dulling, polishes back to shine | Uneven discoloration, coating may flake or peel |
| Skin reaction | Rarely, when nickel-free | Green marks common as plating wears through |
Genuine 925. Hallmarked, always.
Frequently asked questions
How can I tell if silver jewelry is real?
Look for a "925" hallmark stamped on the piece, test with a magnet (genuine silver isn't magnetic), and observe how it tarnishes over time — genuine sterling silver dulls evenly and polishes back to shine, while plated base metal often discolors unevenly or flakes.
Does real silver turn your skin green?
Genuine 925 sterling silver rarely causes green skin marks when it's nickel-free. Green marks are more commonly a sign of base-metal plating wearing through, exposing the reactive metal underneath.
Is all sterling silver stamped 925?
Reputable sterling silver jewelry is typically stamped with "925" as an industry-standard hallmark. Its absence doesn't always mean it's fake, but it's a strong reason to verify with the seller before buying.
Why does sterling silver tarnish if it's real?
Sterling silver tarnishes because of its copper alloy content reacting with air and moisture over time — this is a normal characteristic of genuine silver, not a sign of poor quality, and it's fully reversible with polishing.
Is a magnet test reliable for checking silver?
It's a useful quick check — genuine silver is not magnetic, so visible attraction to a strong magnet suggests base metals like steel or iron are present. It's not foolproof on its own, but combined with checking the hallmark, it's a solid first screen.
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