How to Clean Sterling Silver Jewellery (And Stop It Tarnishing)

How to clean sterling silver jewellery

For everyday grime, a simple soap-and-water soak is enough. Jewelers of America recommends warm water, a few drops of mild dish soap, and a soft-bristled toothbrush worked gently into any detail or setting, followed by a thorough rinse and a dry with a lint-free cloth.

That soap soak handles dirt and skin oils, but it will not touch actual tarnish, the black or dull grey film that builds up on silver over weeks or months. For tarnish, you need one of the two methods below, and which one you use depends on how bad the tarnish is and how much detail the piece has.

Why sterling silver tarnishes

Pure silver on its own is soft, so jewellers alloy it with copper for strength. The U.S. Geological Survey defines sterling silver as the standard for articles containing 92.5% silver and 7.5% copper or other alloy metals, and that copper does a lot of the work when a piece starts to darken.

Both metals react with sulfur compounds naturally present in air, mainly hydrogen sulfide gas. Compound Interest, a chemistry education site, describes the reaction as 2Ag + H2S to Ag2S + H2, which produces silver sulfide, the black tarnish layer you see. It's a slow, constant process, not something caused by wearing a piece "wrong." Humidity speeds it up, and so does contact with rubber, wool, or air near a gas stove.

The everyday triggers

Perfume and hairspray left on the piece, chlorinated pool water, latex gloves, and a humid bathroom drawer all speed up tarnish. None of these are dramatic alone, but they add up over months, which is why a ring worn daily in a humid climate tarnishes faster than one kept in a dry, sealed box.

Tarnish removal: foil, baking soda, and hot water

This is the method chemists use to explain electrochemistry in classrooms, and it works just as well on a jewellery box. It removes tarnish through a genuine chemical reaction rather than scrubbing the surface away, which matters because scrubbing takes a thin layer of actual silver with it. This method does not.

1. Line a bowl with aluminum foil, shiny side up.
2. Add 1 tablespoon of baking soda and a pinch of salt for every cup of water you plan to use.
3. Pour in near-boiling water over the foil and baking soda.
4. Drop the silver in so it touches the foil directly. Contact matters. Pieces resting only against each other will not clean as well.
5. Leave it for 1 to 5 minutes depending on how heavy the tarnish is, then lift the pieces out with tongs or a spoon.
6. Rinse under warm water and dry immediately with a soft cloth.

UC Davis's chemistry department explains why this works: aluminum gives up electrons more readily than silver, so when the two metals touch in the baking soda solution, the aluminum is oxidized and the silver sulfide is reduced back to metallic silver. The foil sacrifices itself and turns dull, while the silver comes back bright, with none of the silver itself lost the way it would be with an abrasive polish.

Why not to use baking soda as a direct abrasive paste

Baking soda mixed with water into a paste and rubbed directly onto silver is a popular trick, and it does remove light tarnish. It also scratches. Baking soda crystals are mildly abrasive, and on a polished or high-shine finish, or on silver plate where the silver layer is thin, that abrasion shows up as fine scratches over repeated use. The foil method above gets the same result through a chemical reaction instead of friction, which is why we point people there first.

If a piece is textured, matte, or deliberately oxidized, skip an abrasive paste entirely. Scrubbing it will take the intentional dark detailing off along with the tarnish.

Cleaning method comparison

Method	Best for	Removes silver along with tarnish?	Damage risk
Warm soap-water soak	Everyday dirt and skin oils, not actual tarnish	No	Low. Safe for daily use.
Foil, baking soda, and hot water	Light to moderate tarnish, chains, detailed settings	No, works by chemical reaction	Low. Safe for most solid sterling silver without glued stones.
Polish cloth (impregnated with mild abrasive/tarnish remover)	Spot-cleaning flat surfaces, quick touch-ups	Yes, a very thin layer	Moderate. Repeated use thins plating and softens engraved detail over years.
Baking soda paste rubbed directly on	Occasional light tarnish on solid, unplated, non-textured silver	Yes, through abrasion	Moderate to high on plated, matte, or oxidized-finish pieces.

Anti-tarnish storage that actually slows the reaction

Storage will not stop silver from tarnishing forever, because the reaction only needs trace sulfur already present in ordinary air. What storage can do is slow it down considerably, which is the realistic goal.

• Anti-tarnish strips or pouches absorb sulfur compounds from the air, worth using in any drawer or box where silver sits for weeks between wears.
• Keep silver away from rubber bands and untreated wool or felt. Both off-gas sulfur compounds that speed up tarnish.
• Store pieces separately, wrapped individually in a soft cloth, so silver isn't touching other metals or itself in a drawer.
• A sealed bag or airtight container limits airflow and slows the reaction, though it's not a substitute for anti-tarnish material inside it.
• Wear it more, not less. Silver worn regularly and wiped with a soft cloth after each wear often tarnishes slower than silver left untouched in a drawer.

If you're weighing silver against other materials in your collection, our Gemstone Guide covers how different stones hold up to the same storage and cleaning questions.

Frequently Asked Questions