Last updated: 17 September 2026
If your silver ring, necklace, chain or earrings have turned black, don't panic: in most cases it's simply tarnish. Sterling silver naturally reacts with substances in its surroundings and forms a dark layer on the surface. It does not mean your jewellery is fake.
Quick answer: sterling silver is 92.5% silver mixed with other metals, usually including copper. Exposure to sulphur compounds, moisture, sweat, cosmetics and other chemicals can cause the surface to darken. The black tarnish associated with silver is mainly silver sulphide, and in most cases it can be polished away.
Jump to: Why silver turns black | Does real silver turn black? | Why it can turn black overnight | Rings, chains and earrings | Black marks on your skin | How to clean it | How to prevent tarnish | Oxidised silver | FAQs
Why does silver jewellery turn black?
The black colour is usually tarnish: a thin layer that develops on the surface of silver after chemical reactions with substances around it.
You may also hear this described as silver “oxidising”. That's a useful everyday description, but it can be slightly misleading if you imagine silver simply reacting with oxygen in the way iron rusts. Black silver tarnish is mainly silver sulphide, which forms when silver reacts with sulphur-containing compounds such as hydrogen sulphide in the air (Canadian Conservation Institute).
That distinction isn't particularly important when you're standing there wondering why your favourite necklace has gone black. The useful bit is this: tarnish is a surface reaction, not your silver suddenly changing into a different metal.
Sterling silver isn't pure silver. It contains 92.5% silver, with the remainder usually made up of copper, zinc and other metals. Those additional metals make sterling silver practical for jewellery, but the copper in particular can react with its environment and contribute to discolouration.
Does real silver turn black?
Yes. Real sterling silver can absolutely turn black.
In fact, tarnishing is perfectly normal for sterling silver and isn't evidence that you've been sold fake jewellery. How quickly it happens varies enormously depending on where the jewellery is kept, what it comes into contact with and your own skin chemistry.
At jewellerybox, our sterling silver is certified by the Edinburgh Assay Office and we're Assay Assured. You can also read our guide to sterling silver if you'd like to know more about the metal itself.
Some of our sterling silver jewellery also has an E-Coat lacquer, which can help keep it looking new for around 2–5 years. Not every piece has this coating, so contact us if you'd like us to check a particular product for you.
Why has my silver turned black overnight?
Sometimes it seems to happen ridiculously quickly: your silver looked fine yesterday and today there's a black or grey patch.
That doesn't mean anything dramatic happened to the jewellery overnight. Several things can speed up tarnishing:
- Body chemistry and sweat: different skin pH levels can affect how quickly sterling silver tarnishes. On some people, noticeable tarnish can develop within only a few days.
- Cosmetics: perfume, hairspray, makeup, moisturiser and other products can leave chemicals and residues on jewellery.
- Moisture: repeated exposure to water and sweat can accelerate tarnishing.
- Chlorine: chlorinated water and cleaning products can affect silver and other jewellery metals.
- Sulphur compounds: these are the main cause of the black silver sulphide associated with tarnish and are present in the surrounding environment.
This is why the same pair of earrings might stay bright for a long time on one person and tarnish quickly on somebody else.
If yours tends to tarnish during hot weather or exercise, see our guide to looking after silver jewellery in summer. We also explain when it's best to take jewellery off in our guide to wearing jewellery in the shower.
Why have my silver ring, chain, necklace or earrings turned black?
The chemistry is essentially the same whatever the piece, but where and how you wear it can make a difference.
Why has my silver ring turned black?
Rings spend a lot of time against your skin and regularly come into contact with sweat, hand cream, soap and water. That repeated contact can make tarnish particularly noticeable on rings.
Why has my silver chain or necklace turned black?
Chains sit directly against your neck, where they can pick up sweat, perfume, moisturiser and skincare. The small links also create lots of surfaces where residue and tarnish can build up, making a chain look darker overall.
Why has my silver bracelet turned black?
Bracelets are exposed to many of the same things as rings: water, hand products, sweat and everyday contact with surfaces. Wiping your bracelet before storing it can help remove some of that residue.
Why do my silver earrings turn black in my ears?
Earrings are in close contact with the skin for long periods, so your individual body chemistry can make a real difference. Sweat, natural skin oils, hair products and cosmetics around the ear can all contribute to tarnishing.
Blackening doesn't automatically mean you're allergic to the earrings. If you're getting itching, soreness or other skin irritation rather than simply seeing darkened metal, read our guide to sensitive skin, jewellery allergies and piercings.
Why does silver leave a black mark on my skin?
A black or grey mark where silver has been sitting against your skin can also be caused by tarnish and metal compounds transferring from the jewellery's surface onto your skin.
This is more likely to be noticeable where jewellery is in close, repeated contact with the body — for example underneath a ring or around an earring post. Sweat, skin chemistry and products such as moisturiser or makeup can contribute.
A black mark by itself doesn't prove that the silver is fake, and it isn't necessarily an allergic reaction. If the skin itself is becoming itchy, swollen, sore or persistently irritated, that's a different issue and it's sensible to stop wearing the piece until you've worked out what's causing it.
How do you clean silver jewellery that has turned black?
Fortunately, ordinary silver tarnish usually polishes off easily. You don't need to attack your jewellery with whatever happens to be underneath the kitchen sink.
- Check the jewellery first. If it contains stones, pearls or an intentionally blackened finish, don't automatically use a silver cleaning product. Different materials need different care.
- Start with a silver polishing cloth. Gently rub the tarnished areas rather than scrubbing aggressively. Our Town Talk silver polishing cloth is made for this.
- Work over the darker areas gradually. Tarnish may initially transfer to the cloth as a dark residue. Keep moving to a clean part of the cloth as you work.
- For suitable pieces that need more attention, use a jewellery cleaning product. Our Town Talk jewellery polishing spray is another option. Follow the product instructions and check that it's suitable for every material in the piece.
- Wipe the jewellery clean before storing it. Removing moisture and residue before putting it away helps slow the next round of tarnishing.
Avoid toothpaste and abrasive baking-soda scrubs: jewellery doesn't need to be physically scoured clean. We also wouldn't use silver dips indiscriminately on jewellery containing stones, pearls or intentionally oxidised finishes.
For a fuller breakdown by metal and gemstone, use our complete jewellery cleaning guide.
How can you stop silver jewellery turning black?
You can't permanently stop uncoated sterling silver from ever reacting with its surroundings, but you can slow the process considerably.
- Put jewellery on after perfume, makeup, hairspray and skincare rather than before.
- Take silver jewellery off before swimming, showering or doing activities that leave it heavily exposed to sweat.
- Wipe jewellery before putting it away.
- Store pieces clean and dry rather than leaving them in a bathroom or exposed on a dressing table.
- Keep individual pieces separated where possible so they don't scratch each other.
- Consider anti-tarnish storage for silver you don't wear regularly.
We've covered storage in much more detail in our guide to preventing jewellery tarnish and using anti-tarnish bags.
What about oxidised or blackened silver jewellery?
Not all black silver needs cleaning.
Oxidised silver or blackened silver is jewellery that has deliberately been given a dark finish. The effect might cover the whole piece or sit in recessed areas to create contrast and make details stand out.
That's very different from unwanted tarnish developing on a previously bright silver surface.
If your jewellery was sold with an oxidised or blackened finish, don't polish the dark areas with a silver cloth or put the piece into a silver dip. Those cleaning methods are intended to remove dark surface material, so they can also remove or alter the finish you actually want to keep.
If you're unsure whether the black colour is deliberate, check the original product description before cleaning it.
Silver tarnish FAQs
Why does silver get black spots?
Black spots are usually small patches of tarnish. They often appear where something has been left sitting on the surface, such as water, sweat, perfume or moisturiser, so that area darkens faster than the rest of the piece. They come off the same way as all-over tarnish: follow the cleaning steps above. If the dark areas are part of an oxidised design, leave them as they are.
Is black silver fake?
No. Genuine sterling silver can tarnish and turn dark grey or black. Tarnishing alone tells you nothing useful about whether an item is genuine.
Is silver turning black oxidation?
It's commonly called oxidation, and tarnishing does involve chemical reactions at the metal surface. More specifically, the characteristic black tarnish on silver is mainly silver sulphide formed through reaction with sulphur compounds rather than simply silver reacting with oxygen.
Why does my silver go black but somebody else's doesn't?
Your skin chemistry, sweat, cosmetics, environment and how you store the jewellery all affect how quickly tarnish develops. Different skin pH levels are one reason the same type of jewellery can behave differently from person to person.
Why does my silver jewellery turn black when I wear it?
Wearing jewellery exposes it to sweat, skin oils, cosmetics and moisture. That can accelerate reactions on the silver's surface, so jewellery may tarnish more quickly when worn frequently than when stored clean and dry.
Can I make black silver shiny again?
If the black colour is ordinary tarnish, usually yes. Start with a silver polishing cloth and gently polish the surface. If the piece contains stones, pearls or a deliberate oxidised finish, check the appropriate cleaning method first.
Will silver tarnish permanently?
Ordinary surface tarnish can generally be removed, but sterling silver can tarnish again because the metal continues to react with its surroundings. Good cleaning and storage habits help slow down how quickly it returns.
If your jewellery needs a little attention, start with our jewellery care guide, or browse our sterling silver jewellery.