Pearls are organic gemstones. Softer, more porous, and far more vulnerable than diamonds or sapphires.
One wrong cleaning method can strip the luster off a pearl permanently. The good news? The right method takes less than two minutes and costs nothing.
This guide covers five safe cleaning methods, seven things you should never do, and type-specific tips, so your pearls stay luminous for decades.
Why Pearl Cleaning Needs a Different Approach
Pearls sit at just 2.5 on the Mohs hardness scale. That means almost any harder material (a diamond ring, a metal clasp, even coarse fabric) can scratch them.
But scratches are only part of the problem. Pearls are made of layered nacre (the iridescent coating that gives them their glow), and that nacre is calcium carbonate. Acids, alcohols, and detergents dissolve it. Heat cracks it. Moisture weakens the silk thread holding strung pearls together.
Unlike diamonds, which you can blast with steam and ultrasonic waves, pearls demand the gentlest touch in your jewelry box. Treat them right, and they can last a lifetime. Treat them like your other jewelry, and they’ll go dull within a year.
5 Safe Methods for How to Clean Pearls
Method 1: The After-Wear Wipe (Daily)
This is the most important method on the list, and the easiest. Every time you take your pearls off, run a soft, lint-free cloth gently over each pearl.
A microfiber jewelry cloth or a clean piece of silk works perfectly. This removes body oils, perfume residue, and perspiration before they can etch into the nacre. Think of it as washing your face at the end of the day. It’s basic hygiene that prevents long-term damage.
No water, no soap, no pressure. Just a gentle wipe. Thirty seconds total.
Method 2: The Damp Cloth Clean (Weekly)
For pearls you wear often, a slightly damp cloth once a week removes buildup that dry wiping alone can’t catch. Dip a soft cloth in lukewarm water, wring it out until it’s barely damp (not wet), and wipe each pearl individually.
Pay extra attention to the drill holes and near the clasp, where grime collects fastest. Let the pearls air dry flat on a soft towel for at least 24 hours before wearing them again.
Method 3: The Mild Soap Wash (Monthly or As Needed)
When your pearls look visibly dull or feel slightly sticky, a mild soap wash is the deepest clean you should attempt at home. Here’s how to clean pearls with soap, step by step.
Fill a small bowl with lukewarm water. Add one drop of mild, non-moisturizing liquid soap (baby soap or a gentle dish soap without degreasers). Swirl gently. Dip a soft cloth into the soapy water, wring until barely damp, and wipe each pearl.
Rinse with a second cloth dampened in clean water. Lay flat on a soft towel. Do not hang. Hanging stretches the wet silk thread. Let dry completely for at least 48 hours before wearing. The thread must be fully dry; damp silk stretches and weakens.
Method 4: Pearl-Specific Cleaning Products
Some jewelry cleaners are formulated specifically for pearls. These are pH-neutral and free of ammonia, alcohol, and acids. If you choose this route, verify the label explicitly says “safe for pearls” or “safe for cultured pearls.”
Apply with a soft cloth following the product instructions. Never spray directly onto the pearls. Spray the cloth first. Avoid any cleaner that contains ammonia, vinegar, lemon, or alcohol, even if the bottle claims to be “gentle.”
Method 5: Professional Pearl Cleaning (Yearly)
Once a year, or whenever the silk thread looks frayed, stretched, or discolored, take your pearls to a jeweler who specializes in pearl restringing and cleaning. They’ll clean each pearl individually, inspect the knots, and restring on fresh silk.
This is especially important for necklaces you wear weekly. A broken thread means scratched pearls rattling against each other. Professional restringing typically costs $3–5 per inch and is worth every cent for pieces you love.
7 Things You Should NEVER Do When Cleaning Pearls
More pearls are ruined by cleaning than by wearing. Here are the seven most common mistakes. Every one of them is permanent.
1. Never Use Ultrasonic Cleaners
Ultrasonic machines vibrate at high frequencies to shake dirt loose. That vibration also shakes the nacre layers apart. Pearls cleaned in ultrasonic machines often develop a chalky, lifeless surface within weeks. The damage is irreversible.
2. Never Use Steam Cleaners
Steam delivers concentrated heat and moisture simultaneously. Heat cracks nacre. Moisture weakens silk. Combined, they destroy both the pearl and the string in seconds. If a jeweler offers to steam-clean your pearls, politely decline.
3. Never Soak Pearls in Water
We covered this topic in depth in our guide on whether freshwater pearls can get wet, but it bears repeating. Soaking pearls allows water to seep into the drill holes, which weakens the silk thread and can cause the nacre to peel away from the nucleus. Wipe, don’t soak.
4. Never Use Toothbrushes or Abrasive Cloths
Even the softest toothbrush bristles are too harsh for nacre. Abrasive cloths, paper towels, and tissues are equally dangerous. They create micro-scratches that accumulate into a cloudy haze over time.
5. Never Apply Chemicals Directly
Hairspray, perfume, hand sanitizer, vinegar, lemon juice, rubbing alcohol: all of these dissolve calcium carbonate on contact. Follow the “last on, first off” rule: put your pearls on after all cosmetics, and take them off before removing makeup.
6. Never Use Jewelry Polishing Cloths
Standard jewelry polishing cloths contain abrasives and chemical compounds designed for metal. These will strip the nacre’s surface layer, leaving your pearls looking permanently frosted instead of luminous.
7. Never Expose Pearls to Direct Heat or Sunlight
Heat dehydrates nacre, causing it to crack and yellow. Leaving pearls on a sunny windowsill, near a radiator, or in a hot car can cause irreversible damage in a single afternoon. Store them in a cool, soft pouch or lined box.
How to Clean Pearls by Type
Not all pearls need the exact same care. Here’s how cleaning differs across the most common varieties.
Freshwater Pearls
Freshwater pearls are typically solid nacre, meaning there’s no shell bead nucleus inside. This makes them slightly more durable than bead-nucleated pearls, but the nacre is still calcium carbonate. Use all five methods above.
Freshwater pearls often have a softer luster than Akoya pearls, so be especially gentle to preserve that glow. According to the GIA pearl care guide, occasional mild soap washing is safe for most cultured pearls.
Akoya Pearls
Akoya pearls have a thin nacre coating over a shell bead nucleus. The nacre layer can be as thin as 0.5mm, so even minor abrasion or chemical exposure can wear through to the bead. Stick to Methods 1 and 2 (dry wipe and damp cloth). Reserve the mild soap wash for visible staining only.
Tahitian and South Sea Pearls
These larger pearls tend to have thicker nacre, which makes them somewhat more forgiving. However, Tahitian pearls’ dark colors and South Sea pearls’ golden hues can fade with harsh cleaning. A dry wipe after every wear and a damp cloth monthly is plenty.
Dyed or Treated Pearls
Some freshwater pearls are dyed to achieve colors like peacock, chocolate, or vivid pink. Dyed pearls are the most vulnerable. Any moisture or chemical can leach the dye, causing uneven fading.
For dyed pearls, stick strictly to dry wiping (Method 1). If they need deeper cleaning, consult a professional rather than attempting it yourself. The Gemological Institute of America notes that dyed and treated pearls may change over time with normal wear.
Pearl Storage: The Best Way to Reduce Cleaning
The best way to keep pearls clean is to prevent them from getting dirty in the first place. Proper storage buys you time between cleanings and extends the life of your pearls dramatically.
Store each piece separately in a soft cloth pouch or a lined jewelry compartment. Never pile pearls on top of other jewelry. Even gentle contact with harder gems will scratch nacre over time. Keep them away from heat sources and direct sunlight.
Wear your pearls regularly. It sounds counterintuitive, but the natural oils from your skin actually help maintain nacre’s luster. Pearls that sit untouched in a drawer for years tend to dehydrate and yellow. The jewelry you invested in deserves to be worn, not locked away.
If you won’t wear a piece for months, wipe it clean, store it in a soft pouch, and add a small damp cloth nearby (not touching the pearls) to maintain gentle humidity. This prevents the nacre from drying out and cracking.
Frequently Asked Questions About How to Clean Pearls
Can I use baking soda to clean pearls?
No. Baking soda is mildly abrasive and will scratch the nacre surface. It also has a high pH that can react with calcium carbonate. Use a drop of mild baby soap in lukewarm water instead.
How often should I clean my pearl necklace?
Wipe after every wear with a dry cloth. Damp-wipe weekly if you wear the piece daily. Mild soap wash only when visibly dull or sticky, roughly once a month for frequently worn pieces. Professional cleaning and restringing once a year.
Why did my pearls turn yellow after cleaning?
Yellowing usually means the nacre has been dehydrated by heat, chemical exposure, or prolonged dry storage, not that the cleaning itself caused it. Once yellowed, the change is permanent. Prevention is the only cure: store in moderate humidity, avoid heat, and clean gently.
Is it safe to wear pearls in the shower?
No. Shower water contains chlorine, soap, and shampoo, all of which damage nacre. The heat and moisture also weaken the silk thread. We explain this in detail in our guide to freshwater pearls and water exposure.
Can I use a silver polishing cloth on my pearl ring?
Only if you can polish the metal setting without touching the pearl at all. Silver polishing cloths contain abrasives that will scratch nacre instantly. For valuable pearl pieces, have a jeweler clean the setting professionally rather than risk it yourself.
Keep Your Pearls Clean and They’ll Last a Lifetime
Cleaning pearls isn’t complicated. It’s just different from cleaning every other gemstone you own. The five methods in this guide, done consistently, will keep your pearls luminous for decades.
The rules are simple: wipe after every wear, avoid all chemicals, never soak, and restring yearly. That’s it. Your pearls don’t need expensive products or complicated routines. They need consistency and gentleness.
Start tonight. Take off your pearls and give them a thirty-second wipe with a soft cloth. That single habit will do more for their longevity than any deep-clean method ever could.