By Michelle Graff
michelle.graff@nationaljeweler.com
An ultrasonic jewelry cleaner from The Kingswood Company. Ultrasonic machines are good for bulk cleaning of jewelry, and jewelry doesn’t have to remain in them for the full three minutes to be thoroughly cleaned.
Columbus, Ohio—This spring, one of the industry’s most in-demand women virtually sat down with National Jeweler to discuss one of the hottest topics of 2020—how to keep jewelry clean and customers calm amid the COVID-19 pandemic.

Kristie Nicolosi, president and CEO of The Kingswood Company, got on a Skype call to talk all things jewelry cleaning.

Based in Columbus, Ohio, Kingswood is a maker of private-label jewelry cleaners and polishing cloths.

Nicolosi discussed hand sanitizer, why using alcohol to clean jewelry is a bad idea, the difference between cleaning and disinfecting, and why now is a great time to talk to customers about jewelry cleaner.

“It’s a tremendous opportunity all the way around to meet that customer where they are and be able to give them, or sell to them ideally, the product that they need,” she said.

“Everybody wants to know how to clean and care for what’s important to them.”

Cleaning vs. Disinfecting
Cleaning and disinfecting are terms that are often used interchangeably, but the chemistry is not the same, Nicolosi said.

Disinfecting typically refers to killing germs on surfaces, not on humans.


The Environmental Protection Agency regulates disinfectants and, Nicolosi said prior to March, only a handful of products were EPA-registered disinfectants.

Since then, the EPA has been issuing temporary approvals under the “emerging pathogens” regulations to get new products on the market quickly because of COVID-19. But, Nicolosi noted, there still are not as many disinfectants as there are soaps.

At this point, there are about 50 active ingredients approved by the EPA to work on the coronavirus. The agency regularly updates its list of approved products, called “List N.”

Those seeking to disinfect surfaces should also note that disinfectants have what’s called a dwell time, meaning the amount of time the product has to stay on the surface—and stay saturated on the surface—to do its job.

Grab a container of Clorox Disinfecting Wipes (if you can get one) and look at the back.

Under “To Disinfect” it states: “Wipe surface to be disinfected. Use enough wipes for treated surface to remain visibly wet for 4 minutes. To kill viruses [including the coronavirus] let stand 15 seconds.”

Nicolosi said overall, the average dwell time of all approved products on the market today is 6 1/2 minutes. The surface must be saturated, and remain saturated, for the full time period indicated.

Cleaning, on the other hand, refers to removing dirt and germs from surfaces, and any cleaners that are applied to the body, like soaps and body washes, are regulated by the Food and Drug Administration.

Jewelry cleaner is, as the name indicates, considered a cleaner but is not FDA regulated as it is not applied to the body. It is a special form of soap formulated to work on hard surfaces, like metals and gemstones, without being damaging.

Nicolosi said both the Centers for Disease Control and Prevention and the World Health Organization recommend cleaning (e.g, washing your hands with soap) over using hand sanitizer whenever possible.

And as with your hands, jewelry cleaner should be applied for 20 seconds before being washed off.

“I don’t want people to think there’s a really easy way we can disinfect everything,” Nicolosi said.

“The best answer is soap and water. It’s more effective in a shorter period of time. It’s just like washing your hands.”

Cleaning Jewelry in Stores
Jewelry should be cleaned with some version of jewelry cleaner before it is handed to a customer to try on and at some point after it is returned, whether that is piece-by-piece and right away or in bulk later in the day.

During Jewelers of America’s Virtual National Convention earlier this year, Holly Wesche, owner of Wesche Jewelers in Melbourne, Florida, said in her store, there is now a corner of a showcase earmarked for unclean jewelry.

It’s a way to ensure all employees know which pieces need to be cleaned before being tried on again while still having merchandise locked up in a secure place.
20200624 Kingswood jewelry cleanerThe Kingswood Company has four main formulas (from left): an ammonia-based fine jewelry cleaner, the company’s oldest formula that’s good for diamond jewelry; gentle jewelry cleaner, which is safe for all jewelry, including pearls and fashion pieces; natural jewelry cleaner; and silver jewelry cleaner, which has tarnish remover.

Ultrasonic jewelry-cleaning machines are, as a general rule, more effective and are good for bulk cleaning.

Jewelry also doesn’t need to be in the machine for the full three minutes, Nicolosi said. The 20 seconds recommended for soap and water will do.

But, she noted, not all jewelry is safe for an ultrasonic machine—if a customer has a loose stone, for example—and there’s also the question of having enough of the machines to make them readily accessible to all retail associates.

She said retailers should invest in jewelry cleaner that aligns with their store’s physical size, budget and merchandise; what a store that specializes in bridal might use is different than what would work for a store that sells a lot of softer gemstones, like pearls.

Whatever it is, it should be something that can be executed consistently across the board, at every case and by every associate, she said.

With repairs, the piece should be cleaned as soon as it comes into the store. Any jewelry that is bought online and returned to a distribution center should be thoroughly cleaned as well.

Thoughts on Alcohol
Many jewelers are using alcohol to clean jewelry both before and after customers try it on, for a couple reasons—it’s inexpensive and it has that antiseptic odor so often associated with cleanliness and sterilization.

As Nicolosi put it: “I think it smells like we think a disinfectant should, which is comforting.”

Kingswood does not recommend the use of alcohol because it is not safe for porous jewelry like emeralds, pearls and opals, it requires a dwell time as a disinfectant (as mentioned above), and it’s not all the same.

Anything below or above 70 percent isopropyl alcohol (a solution of approximately 70 percent IPA and 30 percent distilled water) is actually less effective at killing germs.

While this might seem counterintuitive—shouldn’t 99 percent IPA be better than 70 percent IPA?—Nicolosi said higher percentages of IPA are actually less effective at disinfecting because the water is a necessary part of the process, serving to increase surface contact time.

Kingswood also recommends against jewelers buying 99 percent IPA and trying to mix their own solutions, as it can be both dangerous and ineffective.

A Few Last Notes for Consumers
While popular right now for obvious reasons, hand sanitizer isn’t great for soft stones, like pearls and opals. The alcohol in it could damage them and dull the shine.

Kingswood recommends jewelers tell their customers to take off any pearl or opal rings before applying hand sanitizer.

Nicolosi said the question of, should people take off their jewelry when they wash their hands is a subject of much debate.

The only guidance the CDC has issued on the matter is that health care professionals should not wear jewelry at all while on the job, which is not helpful to most consumers or jewelry professionals.

She said Kingswood’s recommendation is two-fold.

Consumers should wash their hands often throughout the day and keep their wedding rings or other small rings on while doing so, just washing around them. This will remove surface germs but, she noted, not remove or wash away germs that might linger underneath the ring.

Then, once a day, consumers should clean their rings by dropping them in a jar of cleaner and letting them soak while they wash their hands.

“Because viruses cannot replicate without a host, they will not be multiplying underneath your rings,” Nicolosi said. “As long as you are not putting them in your mouth, or licking your fingers (or your rings), you should be safe.”


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Since 1906, National Jeweler has been the must-read news source for smart jewelry professionals--jewelry retailers, designers, buyers, manufacturers, and suppliers. From market analysis to emerging jewelry trends, we cover the important industry topics vital to the everyday success of jewelry professionals worldwide. National Jeweler delivers the most urgent jewelry news necessary for running your day-to-day jewelry business here, and via our daily e-newsletter, website and other specialty publications, such as "The State of the Majors." National Jeweler is published by Jewelers of America, the leading nonprofit jewelry association in the United States.