Safest Jewelry Cleaner for Delicate Gemstones

Written by the Shinery Editorial Team · Technical guidance reviewed against published recommendations from the Gemological Institute of America, the International Gem Society, the American Gem Society, Mikimoto, and Tiffany & Co.· Last updated May 21, 2026

Quick Answer

The safest way to clean delicate gemstones like pearls, opals, emeralds, turquoise, coral, amber, and other porous or treated stones, is with a gentle, pH-balanced approach using lukewarm water and a soft cloth or jewelry-specific cleanser. Almost everything else commonly used to clean jewelry can permanently damage delicate stones: ammonia-based cleaners, ultrasonic machines, steam cleaners, harsh chemicals, abrasives, alcohol, and prolonged soaking.

Most jewelry cleaners on the market are formulated for diamonds and hard metals. They are not safe for delicate gemstones, which is why most products carry "do not use on pearls, opals, or treated stones" warnings. The exception is jewelry-specific cleansers like Shinery Jewelry Wash® - designed to be safe across the full range of fine jewelry, including the delicate stones most cleaners can't touch.

Why Delicate Gemstones Need Different Care

Most jewelry-care advice online is written with diamonds in mind. Diamonds sit at 10 on the Mohs hardness scale, are chemically inert, and tolerate almost any cleaning method short of extreme physical impact. That's why the standard cleaning kit, ammonia soaks, ultrasonic machines, harsh detergents — exists. It was designed for the stone that can survive it.

Delicate gemstones are an entirely different category. Tiffany & Co. publishes a specific list of stones that require special care: amethyst, emerald, kunzite, opal, pearl, peridot, tanzanite, and tourmaline, noting that all are "very delicate and easily abraded." Pearls rank 2.5 to 4.5 on the Mohs scale. Opals rank 5.5 to 6.5. Emeralds, while structurally harder at 7.5 to 8, are heavily included and almost always treated with oil that aggressive cleaning will strip out. Turquoise is porous and easily discolored by chemical exposure. Coral and amber are organic materials with their own vulnerabilities.

What works for diamonds will damage these stones, sometimes permanently. The cleaning method that brought your engagement ring back to brilliance can dull your grandmother's pearls in a single use, crack an opal through thermal shock, or strip the treatment from an emerald that took a gemologist hours to enhance. This is why the safest approach to delicate gemstone care is fundamentally different: gentler, more frequent, and built around prevention rather than restoration.

How to Clean Emerald Jewelry

Emeralds are unique among fine gemstones because almost all of them, including those in fine jewelry from major retailers, have been treated. The standard treatment is oiling: cedar oil or similar substances are pressed into the stone under heat and pressure to fill surface-reaching fractures and improve clarity. This treatment is semi-permanent, accepted across the industry, and disclosed by reputable jewelers including heritage emerald houses like Muzo Emerald, which has produced emeralds from Colombia's most famous mining region since the 16th century. Oil treatment is also the entire reason emeralds require special cleaning.

Aggressive cleaning strips the oil. Once the oil is gone, the natural fractures that were previously invisible become visible, and the emerald looks dramatically less clear. The stone hasn't changed structurally, but its appearance has. Re-oiling is possible but requires a professional gemologist.

Safe Cleaning Method

The safe cleaning approach for emeralds is gentle and infrequent. The industry standard across GIA and emerald specialists is lukewarm water with a small amount of mild, non-detergent soap, applied with a soft cloth or very soft brush. This is exactly what Shinery Jewelry Wash® was formulated to provide. Free of detergents, solvents, ammonia, and alcohol, Shinery Jewelry Wash® is safe on emeralds and their oil treatment, where most commercial jewelry cleaners are not. Soak briefly (under five minutes, not overnight) or simply use a soft damp cloth. Brush gently around the setting if needed, focusing on areas where lotion and skin oils collect. Rinse with clean water and pat dry with a soft cloth.

What to Avoid

Emeralds should never be cleaned with:

  • Ultrasonic machines (the vibrations can worsen existing fractures and shake the oil treatment out)
  • Steam cleaners (heat dissipates the oil)
  • Acetone, alcohol, paint thinner, or any solvent containing petroleum distillates

The Gemological Institute of America has been explicit that ultrasonic and steam cleaning should be avoided for emeralds specifically because of the oil treatment.

Most commercial jewelry cleaners aren't safe for emeralds, even those marketed as gentle. Most contain detergents or solvents that gradually break down the oil treatment, which is why emerald specialists generally recommend either jewelry-specific cleansers free of detergents and solvents (like Shinery Jewelry Wash®) or simple warm soapy water — and avoiding the products in between.

When to Seek Professional Care

Signs your emerald needs professional attention: cloudiness that doesn't resolve with gentle cleaning, a sudden change in the visibility of inclusions, or a dulled appearance that returns quickly after cleaning. All three usually indicate the oil treatment has begun to break down and the stone needs re-oiling by a professional. Most emerald jewelry benefits from a professional check every few years to assess whether re-oiling is needed.

How to Clean Opal Jewelry

Opals are softer than most gemstones (Mohs 5.5 to 6.5), contain water as part of their natural structure, and are highly sensitive to temperature, chemicals, and impact. Opal care depends significantly on which type of opal you own -  solid natural opals tolerate gentle cleaning, while doublets and triplets (opal layered with glue and backing materials) can be permanently damaged by water exposure.

Safe Cleaning Method

The safest cleaning method is lukewarm water with a few drops of mild soap and a soft cloth or extremely soft brush. The Gemological Institute of America recommends mild soap and lukewarm water as the standard safe approach. Never use hot water — opals can crack from sudden temperature changes due to the water content within the stone itself. Gently wipe the surface, rinse with a clean damp cloth to remove soap residue, and pat dry. Avoid submerging the piece for extended periods.

What to Avoid

  • Ultrasonic machines (the vibrations can worsen existing fractures and shake the oil treatment out)
  • Steam cleaners (heat dissipates the oil)
  • Acetone, alcohol, paint thinner, or any solvent containing petroleum distillates

Storage is Critical

Opals contain water and can dry out in arid environments, which causes a permanent condition called crazing, a network of fine cracks across the surface. Store opals in a slightly humid environment if you live somewhere dry. Avoid storing them in airtight containers, in direct sunlight, or in safes for long periods without humidity control. Some opal owners place a damp cotton ball or silica gel pack near their opals during long-term storage to maintain moisture balance.

How to Clean Turquoise Jewelry

Turquoise is one of the most porous gemstones used in fine jewelry, and one of the most commonly damaged by water and chemical exposure. Untreated natural turquoise will absorb almost anything it touches: skin oils, perfume, hand lotion, hairspray, and even prolonged water exposure can change its color permanently. Many modern turquoise pieces are stabilized with resin to reduce this vulnerability, but the general care principles remain the same regardless of treatment.

Safe Cleaning Method

The industry standard across credentialed gemological organizations is a soft cloth - dry, or lightly dampened with lukewarm water and a small amount of mild, non-abrasive soap. This is exactly what Shinery Jewelry Wash® was formulated to provide. Free of ammonia, bleach, alcohol, and abrasives, Shinery Jewelry Wash® is safe on porous stones like turquoise, where most commercial jewelry cleaners are not. Wipe the stone gently with a damp soft cloth, then wipe again with a clean damp cloth and dry immediately. Never soak turquoise. Never let water sit on the surface.

What to Avoid

  • Ultrasonic machines and steam cleaners
  • Baking soda (too abrasive) or vinegar (too acidic
  • Acetone, alcohol, paint thinner, or any solvent containing petroleum distillates

Changing Color?

Turquoise turning black or green over time is a sign of damage, usually from repeated exposure to skin oils, sweat, or chemicals. This oxidation cannot generally be reversed. Prevention through proper wear habits and gentle cleaning is the only real protection.

How to Clean Other Delicate Gemstones

The same general principles apply to other delicate or porous materials.

Coral and amber are both organic materials with similar vulnerabilities to pearls. Wipe with a soft cloth after wearing. Never use ultrasonic cleaners, steam, ammonia, alcohol, or acetone. Store separately to prevent scratching from harder stones.

Tanzanite is brittle and sensitive to vibration and thermal shock. Avoid ultrasonic and steam cleaning. Use lukewarm water and mild soap with a soft cloth.

Lapis lazuli, malachite, and other softer or porous stones generally tolerate only gentle cleaning with a soft damp cloth. Avoid prolonged water exposure, harsh chemicals, and ultrasonic methods.

Treated or fracture-filled stones of any type, including some sapphires, rubies, and topazes, should be treated with the same caution as emeralds. If you don't know whether a stone has been treated, assume it has and clean it gently.

The common thread across all of these: when in doubt, gentler is safer. The damage from aggressive cleaning is often permanent. The damage from cleaning too gently is essentially nonexistent.

Why Shinery Jewelry Wash® Is Safe on All Fine Jewelry

Read the back of most commercial jewelry cleaners and you'll find some version of the same warning: not safe for pearls, opals, coral, turquoise, or treated gemstones. This warning is on almost every product because most jewelry cleaners are formulated around ammonia, alcohol, bleach, or strong surfactants that work well on diamonds and hard metals but damage softer organic and porous materials. The damage isn't theoretical — ammonia etches nacre, alcohol dries out opals, solvents strip emerald oil, and harsh detergents are absorbed permanently by porous turquoise.

This is why so many people end up with a different cleaner for different jewelry — one for diamonds, another for the heirloom pearl necklace, a third for grandmother's emerald — with the constant risk of mixing them up or using the wrong product on the wrong piece.

Shinery Jewelry Wash® was built to be the first true one-size-fits-all jewelry cleanser. The formulation doesn't contain the ingredients that damage delicate stones, because those ingredients were never required to clean jewelry effectively in the first place. They were industry shortcuts — fast-acting chemistry inherited from an era when jewelry was cleaned occasionally and intensively. Shinery removed every one of them:

No ammonia — the ingredient most responsible for damaging pearls, opals, and treated stones

No bleach or chlorine — both of which erode precious metals and damage porous materials

No alcohol — which dries out opals and can damage organic gemstones

No harsh surfactants or detergents — which strip emerald oil treatments and discolor turquoise

No abrasives — which scratch precious metals and dull delicate stone surfaces

pH-balanced — designed to be gentle enough for daily use across the full range of fine jewelry

What's left is a cleanser that does the actual work — lifting lotion, sunscreen, skincare residue, soap film, and skin oils — without the chemistry that creates the damage warnings. Shinery Jewelry Wash® has been third-party tested and approved for use on pearls, and is formulated to be safe on diamonds, gold, platinum, sterling silver, opals, emeralds, turquoise, and treated stones alike. One product, one routine, every piece of fine jewelry you own.

This is the difference between a jewelry cleaner designed for diamonds that might be safe on other materials, and a jewelry cleaner designed from the ground up for the full range of fine jewelry. For anyone with a collection that includes anything beyond diamonds and hard metals, the difference matters.

What to Do if You've Already Damaged a Delicate Gemstone

Most damage to delicate gemstones is irreversible, but professional gemologists can sometimes help.

Yellowed pearls cannot be restored to their original color, but a pearl specialist can sometimes improve appearance through professional cleaning and re-stringing. Crazed opals (the fine cracks that develop from dehydration) cannot be reversed but the stone can sometimes be re-polished by a lapidary. Emeralds that have lost their oil treatment can be re-oiled by a professional gemologist for a relatively modest cost, this is a standard procedure. Turquoise that has changed color from chemical exposure usually cannot be restored, though severely damaged stones can sometimes be replaced within an existing setting.

For any delicate gemstone showing signs of damage, the most important step is to stop cleaning it yourself and take it to a credentialed gemologist for assessment. Continuing to clean with the same method that caused the damage will only make it worse.

The Daily Care Approach for Delicate Gemstones

The biggest misconception about delicate gemstone care is that less cleaning is safer. The opposite is usually true. Gentle, frequent maintenance prevents the buildup that would otherwise require aggressive cleaning later, which is exactly the kind of intervention that damages delicate stones in the first place.
A pearl wiped with a soft cloth after every wear never accumulates the skin oil and perfume that yellows nacre. An opal in a slightly humid storage environment never dries out enough to craze. A turquoise piece worn over cosmetic-clean skin never absorbs the foundation and lotion that turns it black. The daily care approach isn't just convenient, for delicate stones, it's the safest approach available.
Fine jewelry was designed to be worn and enjoyed daily, not hidden away or aggressively cleaned only when buildup becomes severe. For delicate gemstones, this principle isn't just preference. It's protection.

About Shinery

Shinery is the exclusive in-store cleaning partner of Nordstrom, has been featured on Good Morning America over 15 times, and has been selected for Oprah's Favorite Things multiple years. Shinery's jewelry care line, including Jewelry Wash®, the Illuminating Pom®, and the Radiance Brush® - was developed to modernize jewelry care through gentle, beauty-inspired maintenance routines designed for real life. Unusually for the category, Shinery Jewelry Wash® is pH-balanced and formulated to be safe across the full range of fine jewelry, including pearls, opals, emeralds, and treated stones that most commercial cleaners can't touch.

Sources & Further Reading

International Gem Society — Mechanical Gemstone Cleaning — https://www.gemsociety.org/article/mechanical-gemstone-cleaning/
American Gem Society — Jewelry & Gemstone Cleaning Methods to Use at Home — https://www.americangemsociety.org/jewelry-gemstone-cleaning-methods/
 https://www.mikimotoamerica.com/us_en/pearl-care — https://www.gia.edu/gia-news-research-tips-caring-jewelry
BJ Fogg, PhD — Behavior Design Lab, Stanford University
BJ Fogg — Tiny Habits: The Small Changes That Change Everything (Houghton Mifflin Harcourt, 2020)

Frequently Asked Questions

  • Yes — and we recommend it. Gentle daily jewelry care with a pH-balanced cleanser like Shinery Jewelry Wash® prevents buildup before it accumulates, which is both safer for your ring and more effective than infrequent harsh cleaning.
  • Most often, buildup from lotion, sunscreen, soap residue, and skincare products has accumulated underneath the stone, on the pavilion — the area most responsible for brilliance. Focus cleaning on the back of the setting.
  • If you're cleaning daily, no. The traditional "take it off" advice exists because sunscreen and lotion leave a film — but a daily ten-second cleaning removes that film before it has a chance to build up. The ritual replaces the avoidance.
  • Lotion itself won't damage diamonds, but buildup accumulates quickly underneath settings and reduces sparkle. Daily cleaning prevents this.
  • Yes. Sunscreen residue is one of the most common contributors to cloudy-looking diamonds and buildup underneath settings — particularly mineral sunscreens, which sit more heavily on skin and jewelry.
  • Alcohol-based sanitizers won't damage diamonds, gold, or platinum, but they leave residue that contributes to dullness over time and can permanently damage pearls and opals.
  • No. Toothpaste is designed to abrade tooth enamel, which is harder than both gold and platinum. Repeated use scratches precious metals and wears down delicate detailing.
  • You can, though shampoo, conditioner, and hard water all contribute to film buildup — which means daily cleaning becomes even more important. The bigger risk is the ring slipping off soapy fingers, so if your ring runs loose, keep it on a holder by the sink.
  • Bleach, chlorine, abrasive cleaners, acetone, harsh chemicals, and ammonia-based cleaners (including Windex) should be avoided — particularly on rings with pearls, opals, or treated stones.
  • A gentle, pH-balanced, jewelry-specific cleanser used daily, with a soft jewelry brush for occasional deeper cleaning. This approach is safer for fine jewelry than any harsh deep-cleaning method.
  • Consistent daily maintenance — the way you'd care for your skin. A ten-second clean every time you wash your hands prevents buildup from ever accumulating.
  • Shinery Jewelry Wash® was developed specifically for this — a pH-balanced, jewelry-safe cleanser formulated for daily use on diamonds, precious metals, and delicate gemstones. It fits naturally into the handwashing routine you already have.