Silver jewellery tarnishes — that is not a flaw, just chemistry. Silver reacts with sulphur and moisture in the air and slowly forms a black oxide layer. The good news: tarnish is entirely reversible, and with a little care your silver can stay bright for decades.
Why silver tarnishesPure silver is soft — sterling silver (92.5% silver, 7.5% copper) is the industry standard because the copper alloy adds durability. But it is that copper that drives the tarnishing chemistry. When silver meets:
- Sulphur compounds in air (especially in polluted urban areas).
- Hydrogen sulphide from eggs, onions, garlic, some cosmetics.
- Skin oils and sweat.
- Cleaning products containing bleach or chlorine.
- Rubber or wool (both release sulphur).
A black or yellow-brown film gradually forms on the surface. The silver isn't damaged — it's just covered.
Tip 1: Warm soapy water is the daily answerFor lightly tarnished silver or routine cleaning:
- Warm water (not hot) with a drop of mild dish soap.
- Soak for 5–10 minutes.
- Gently brush with a soft toothbrush.
- Rinse thoroughly.
- Dry immediately with a lint-free cotton cloth.
Do this whenever your silver starts to feel dull — monthly for daily-worn pieces.
Tip 2: A polishing cloth is the best everyday toolA treated jewellery polishing cloth (sold by all major fine jewellers) removes light tarnish in seconds without chemicals or water.
- How it works: the cloth is impregnated with micro-abrasive polish and mild chemicals that dissolve tarnish.
- Use: gently rub the silver in small circular motions until it shines.
- Lasts: each cloth gives roughly 100 uses.
- Store: keep the cloth in its original bag to preserve the chemical treatment.
Never use a standard kitchen or cotton cloth alone for polishing — they don't carry the micro-abrasives and just spread tarnish around.
Tip 3: The "aluminium foil + baking soda" trick for heavy tarnishFor silver that has gone dark or badly discoloured, an electrochemical reaction works wonders:
- Line a bowl with a sheet of aluminium foil, shiny side up.
- Place the silver on the foil, making sure it touches the foil.
- Dissolve 2 tablespoons of baking soda in 500 ml of hot water.
- Pour the solution over the silver until submerged.
- Leave for 5–10 minutes — you may see bubbles as the tarnish transfers to the foil.
- Remove, rinse, and dry.
Do not use this on: silver with pearls, coral, opal, turquoise or any organic/porous stone — they will be damaged. Plain sterling silver only.
Tip 4: Store correctly to prevent tarnishPrevention beats cleaning. Store silver in an environment that minimises air and moisture contact:
- Airtight pouches — polyethylene zip-lock bags are inexpensive and excellent.
- Anti-tarnish strips — small cards that absorb sulphur compounds; place one in each storage bag.
- Silica gel packets — absorb moisture. Free with new shoes; reuse them.
- Original jewellery boxes — only if they are lined with anti-tarnish cloth.
Avoid: storing silver in leather-lined boxes (leather contains sulphur), wool-lined drawers (ditto), or humid bathrooms (steam accelerates tarnishing).
Tip 5: Wear your silver — oxidation slows with daily wearCounterintuitively, the silver that lives in a drawer tarnishes faster than silver worn daily. The oils on your skin form a protective barrier that slows oxidation. A silver chain worn every day may never need more than a polish every few months.
If you have a collection you don't wear regularly, rotate through it — wearing each piece for a day every few weeks keeps it bright.
What to avoid- Toothpaste. An internet favourite. It works but the abrasive particles are too harsh — they cause micro-scratches that make the silver tarnish faster over time.
- Ultrasonic cleaners on textured or stone-set silver. OK for plain silver; damages anything else.
- Chlorine. Swimming pools, bleach, hot tubs — all attack silver. Remove silver before swimming.
- Perfume and hairspray. Apply them first; put on silver last.
- Leaving wet silver to dry. Water stains; always dry immediately with a soft cloth.
Professional cleaning is worth the cost for:
- Heavy tarnish that home methods don't remove.
- Pieces with pearls, opals, or other sensitive stones.
- Intricate filigree or granulation work.
- Antique or high-value pieces where you cannot risk DIY damage.
- Silver plate (not sterling) — plate needs different, gentler treatment.
Most fine jewellers offer free routine cleaning for pieces purchased there.
FAQDoes sterling silver tarnish faster than other alloys?
Standard sterling silver (92.5%) tarnishes at a typical rate. Newer alloys like "Argentium" (93.5%+ with germanium) tarnish significantly more slowly — look for these if tarnish is a constant annoyance.
How often should I polish my silver?
Daily-wear pieces need polishing once every 1–3 months. Occasional-wear pieces need polishing before each wear.
Can I polish silver jewellery with stones?
Plain stones (diamond, sapphire, ruby, quartz) — yes. Porous stones (pearl, opal, turquoise, coral) — no; use only a soft dry cloth near these stones and take care to keep cleaning solutions away.
For gold care, see our gold necklace cleaning guide, or rose gold care.
