IndependentsOct 16, 2025
Retailer Hall of Fame 2025: Jeffrey Zimmer Jeffrey Zimmer's decades of leadership at Reeds Jewelers are defined by integrity, a love of sourcing gemstones, and a heart for community.
GradingFeb 01, 2017
SSEF Begins Offering Age-Dating of Pearls
The Swiss company said it is the first gem laboratory to introduce age-dating for natural pearls as a client service.
The oldest natural pearls examined using the carbon-14 age-dating method by SSEF were recovered in the Cirebon shipwreck off Java in Indonesia. They date back to the 11th century.
Basel, Switzerland--The Swiss Gemmological Institute SSEF said it has become the first gem laboratory in the world to introduce age dating of pearls using carbon-14 (14C) as a service to its clients.
The research and services are offered in partnership with the Ion Beam Physics Laboratory at leading university ETH Zurich.
According to the ETH Zurich website, the 14C method measures the ratio of radioactive carbon (14C) to normal carbon (12C) in the nacre to determine the true age of pearls.
It can be used to provide valuable information about both the age of loose pearls and pearls set in jewelry.
Age determination not only can help support evidence of historic provenance in the case of antique jewelry and iconic natural pearls, but also can also be used to identify fraud in cases where younger pearls are mounted in historic jewelry or have been treated to appear older than they actually are.
The 14C age also is helpful to decide whether a pearl is natural or cultured since cultivation methods for certain mollusk species only started in the 20th century.
Age-dating, especially when it comes to historic pearls, won’t give a single date of formation, the SSEF said, but rather a range of years in which the pearl formed. It still can confirm, however, that the pearl is not, in fact, a modern formation.
SSEF Director Michael S. Krzemnicki told National Jeweler that age dating of pearls has been a topic of research at the lab for years driven by scientific curiosity and interest in the trade in this new approach for pearl testing.
“Having analyzed a selected number of pearls of clients in the last few months, we have now decided to offer radiocarbon age-dating as a specialized service to our clients,” he said.
More on Grading
The Latest
AuctionsOct 16, 2025
Sotheby’s Introduces Custom Jewelry ServiceThe new high jewelry design and production process takes 30 days or less from concept to completion, the auction house said.
MajorsOct 16, 2025
Oscar Heyman’s Holiday Catalog Is Out, and It’s SpectacularThe holiday catalog for 2025 features never-before-seen images of more than 100 one-of-a-kind masterpieces.
Brought to you by
Protect Your Customers and Your BusinessYou deserve to know what you are selling–to protect your customers as well as your business and your reputation.
CollectionsOct 16, 2025
Foundrae Adds To ‘United in Love’ CollectionThe brand has released a second installment of its collection of traditional and non-traditional commitment heirlooms.
Weekly QuizOct 09, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
IndependentsOct 15, 2025
Retailer Hall of Fame 2025: Kathy CoreyCorey rescued New England chain Day’s Jewelers, preserving its legacy with strong people skills, pragmatism, and a “get-it-done” attitude.
CrimeOct 15, 2025
Men Receive Lengthy Prison Sentences for 2023 Murder of Colorado JewelerCharles Robinson Shay was sentenced to life in prison plus 120 years while his accomplice, Michael James McCormack, got 75 years.
Brought to you by
JA New York Fall Is Right Around the CornerThe upcoming show provides savvy retailers with the opportunity to stock their cases with best sellers in advance of the holiday season.
Events & AwardsOct 15, 2025
‘Douriean Fletcher: Jewelry of the Afrofuture’ Opens at MADThe Museum of Arts and Design's new exhibition features 75 pieces by the designer, best known for her work in the “Black Panther” films.
Events & AwardsOct 15, 2025
JCK, Luxury to Debut New Watch Section in Vegas Next YearTimepieces at Luxury will take place at The Venetian and, like Luxury, will be invitation-only for the first two days.
AuctionsOct 15, 2025
Christie's Announces New Jewelry Department LeadershipThe auction house named a new global head of jewelry, as well as a new head of the jewelry department for the Americas.
IndependentsOct 14, 2025
Retailer Hall of Fame 2025: Tom DixonAs chairman of Schwanke-Kasten Jewelers, Tom Dixon has been tasked with honoring the past and shaping the future of the family-run store.
Events & AwardsOct 14, 2025
Here Are the Winners of the BIJC, JA ‘Emerging Jewelers’ Grant Katty Villapando Lyte and Mica Rencher received a $10,000 grant for their business, Shimmer Culture LLC.
IndependentsOct 14, 2025
Day’s Jewelers Crafts Custom Jewelry for No.1 NBA Draft Pick Cooper FlaggThe parents of the Dallas Mavericks rookie bought their engagement ring at a Day’s store in Bangor, Maine, in 1997.
SourcingOct 14, 2025
Pragnell Debuts Kitulo Garnet Jewelry The UK-based brand sourced the gemstones, which are fully traceable, from an artisanal mining community in Tanzania.
CollectionsOct 10, 2025
Count Down to the Holidays With Astrid & Miyu’s Advent CalendarsThe trio of Advent calendars include a version with 18-karat gold and lab-grown diamond jewelry in a red lacquer jewelry box.
CollectionsOct 10, 2025
Piece of the Week: Marla Aaron’s ‘Nymphenburg Lock’Created in collaboration with Nymphenburg Porcelain, the lock is part of a four-piece collection that took two years to bring to fruition.
MajorsOct 10, 2025
Frederick Goldman Names New VP of SalesJewelry industry veteran Alisa Bunger has taken on the role.
SourcingOct 09, 2025
Feriel Zerouki Is Leaving De Beers The company and industry leader’s two-decade tenure with De Beers will come to a close at the end of the month.
AuctionsOct 09, 2025
This Fabergé Egg Could Crack $27M At Auction“The Winter Egg” set the world auction record for a Fabergé piece twice at previous Christie’s sales.
MajorsOct 09, 2025
Sy Kessler Buying Watch Batteries as Silver Hits Record High The company will pay 1.5x silver’s current spot price for each pound of silver oxide batteries submitted.
CollectionsOct 09, 2025
Katkim Launches First Men’s CollectionThe line includes a “Shadow” series crafted exclusively for the new men’s offering and reimagined styles from the brand’s core collections.
SourcingOct 09, 2025
Gemfields’ Mini Mixed-Quality Ruby Auction Garners $11MThe rough on offer was recovered from a newer area at the Montepuez mine.
SourcingOct 08, 2025
In ‘Storied Diamond,’ Jared Jewelers Is Emphasizing the Journey The retailer’s new collection of engagement rings and fashion jewelry is set with natural diamonds that are traceable via blockchain.
CollectionsOct 08, 2025
Emily P. Wheeler Shifts Into Neutral for Latest ‘Ombré’ CollectionThe champagne colorway in her newest “Ombré” collection combines white and trendy brown diamonds, a departure from her usual vibrant hues.
CollectionsOct 08, 2025
Tsuba Designs Inspire Monica Rich Kosann’s New CharmsKosann partnered with the Museum of Fine Arts, Boston, to create a set of necklaces inspired by the artwork on samurai sword handguards.
CrimeOct 07, 2025
Men Who Posed as Utility Workers Found Guilty in Jeweler’s MurderCarlos Jose Hernandez and Joshua Zuazo face life in prison for the October 2024 murder of 72-year-old Detroit-area jeweler Hussein Murray.
