EditorsNov 07, 2025
Piece of the Week: An MVP’s Sapphire Tennis Necklace At the 2025 World Series, the Los Angeles Dodgers’ Yoshinobu Yamamoto sported a custom necklace made by California retailer Happy Jewelers.
SourcingJan 10, 2018
Gübelin Working to Create Blockchain for Colored Stones
The lab is partnering with Everledger to develop technology to trace stones from mine to market.
Gübelin Gem Lab is partnering with Everledger to create a blockchain technology that can track any and all gemstones from mine to market.
Lucerne, Switzerland--In an effort to create more transparency, Gübelin Gem Lab is partnering with a technology company to create a blockchain for colored stones.
The lab announced Tuesday it is working with emerging tech company Everledger to develop the program that will trace gemstones from mine to market, which it calls the first in the world of its kind.
The project comes as part of the lab’s Provenance Proof initiative, a long-term program designed to develop and provide technologies to the gemstone industry to make it more transparent.
“We have a deep belief that the level of transparency we have in the gemstone industry is not fit to fulfill the requirements that today’s critical consumers have,” Gübelin Gem Lab Managing Director Daniel Nyfeler told National Jeweler Tuesday.
“We as a gem lab believe that we have a certain credibility or at least some kind of tech savviness that puts us in quite a good position to develop technologies that can help achieve the goal of transparency.”
That already includes its “Emerald Paternity Test” and now, the creation of the blockchain.
A blockchain is a digital, decentralized ledger of transactions, which constantly grows as completed “blocks” are recorded.
Blockchain technology is secured using cryptography, which means that no one can tamper with the data once it has been recorded, and because the data is stored across its network, it eliminates the risk that comes with holding data centrally.
Everledger--which has experience building blockchain technologies for high-value goods, including diamonds--will design and build the required technical backbone for Gübelin’s Provenance Proof Blockchain.
The technology will engage any and all parties involved in the lifecycle of a gemstone. It can be applied to every colored stone.
The blockchain Everledger is building, expected to launch within the next six months, is a “digital look book,” Nyfeler said, with each gemstone having its own log of information.
RELATED CONTENT: Analysis: The State of the Colored Stone MarketIt will aim to track a stone as early in the supply chain as possible and will build a record of each individual rough gemstone. The owner or custodian of the stone is then entitled to contribute certain information to the “look book”--as well as see certain formation--through to, and including, the end consumer.
“Overall, you get a kind of complete history of that stone,” Nyfeler said.
They are designing it to be easy to use on the front end.
Nyfeler said
they are building their technology based on smartphones (as they’re early in the development process, they are still working to figure out, beyond that, what form the tech will take). A blockchain for a gemstone will be started by entering simple data, such as its weight or a picture of the stone.
When asked about possible barriers for use for artisanal miners, he said the cost to use the blockchain technology is very small: “It’s indeed something that should function with the guy who is sitting in the small-scale mining, as long as he has a smartphone and is willing to give transparency on what he’s doing.”
While it is designed to give supply chain transparency, it wouldn’t be able to stop someone from swapping a mined stone for a synthetic or treated stone somewhere along the way.
“But the good thing is that once it gets detected, you can basically trace it back and most likely find the place where something went wrong,” Nyfeler said. “That’s due to the fact that the blocks are immutable.”
This is also why the lab believes that the blockchain paired with the emerald paternity test provides an “extremely powerful package.”
“The combination of something physical with something digital, we believe, really takes a step forward in our overall attempt to bring more transparency to our industry.”
The paternity test, launched at Baselworld 2017, makes emeralds completely traceable by applying DNA-based nanoparticles directly onto the rough crystals at mining sites.
The lab wants to expand the technology, or something similar to it, to all gems.
Nyfeler said the current type of nanoparticles they use on the emeralds can also now be applied to pearls and Paraiba tourmaline.
The lab is developing other solutions, likely also based on nanoparticles, for rubies and sapphires, though they are only at the lab trial stage for those now.
“We want to develop the technologies that, again, is something physical, that we add to the stone or write in the stone, something that is invisible and that becomes part of the stone and can be retrieved or read at any late stage.”
Since the investment required by anyone interested in the paternity test is quite large, Nyfeler said the lab also is partnering with a consultancy company in the artisanal mining sector on a project to see how the technology can be applied in such an environment.
When asked about possible barriers for use for artisanal miners, he said the cost to use the blockchain technology is very small: “It’s indeed something that should function with the guy who is sitting in the small-scale mining, as long as he has a smartphone and is willing to give transparency on what he’s doing.”
While it is designed to give supply chain transparency, it wouldn’t be able to stop someone from swapping a mined stone for a synthetic or treated stone somewhere along the way.
“But the good thing is that once it gets detected, you can basically trace it back and most likely find the place where something went wrong,” Nyfeler said. “That’s due to the fact that the blocks are immutable.”
This is also why the lab believes that the blockchain paired with the emerald paternity test provides an “extremely powerful package.”
“The combination of something physical with something digital, we believe, really takes a step forward in our overall attempt to bring more transparency to our industry.”
The paternity test, launched at Baselworld 2017, makes emeralds completely traceable by applying DNA-based nanoparticles directly onto the rough crystals at mining sites.
The lab wants to expand the technology, or something similar to it, to all gems.
Nyfeler said the current type of nanoparticles they use on the emeralds can also now be applied to pearls and Paraiba tourmaline.
The lab is developing other solutions, likely also based on nanoparticles, for rubies and sapphires, though they are only at the lab trial stage for those now.
“We want to develop the technologies that, again, is something physical, that we add to the stone or write in the stone, something that is invisible and that becomes part of the stone and can be retrieved or read at any late stage.”
Since the investment required by anyone interested in the paternity test is quite large, Nyfeler said the lab also is partnering with a consultancy company in the artisanal mining sector on a project to see how the technology can be applied in such an environment.
More on Sourcing
The Latest
IndependentsNov 07, 2025
Foundrae’s New Palm Beach Location Is a ‘Golden Solarium’The brand’s seventh location combines Foundrae’s symbolic vocabulary with motifs from Florida’s natural surroundings.
FinancialsNov 07, 2025
Watches of Switzerland’s H1 Sales Up 8%The retailer also shared an update on the impact of tariffs on watch customers.
Brought to you by
Jewelers of America Aligns New Mission to Create Meaningful Impact for MembersFrom educational programs, advocacy, and recent MJSA affiliation, Jewelers of America drives progress that elevates businesses of all sizes.
IndependentsNov 06, 2025
Greenwich St. Jewelers Hosts Raffle Supporting Food RescueAll proceeds from the G. St x Jewel Boxing raffle will go to City Harvest, which works to end hunger in New York City.
Weekly QuizNov 06, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
IndependentsNov 06, 2025
Cornell’s Jewelers Names New PresidentCourtney Cornell is part of the third generation to lead the Rochester, New York-based jeweler.
WatchesNov 05, 2025
Shinola President Steps Down Just as He Starts Former Signet CEO Mark Light will remain president of Shinola until a replacement for Ulrich Wohn is found.
AuctionsNov 05, 2025
Taylor Swift’s Engagement Ring Designer Makes Her Auction DebutKindred Lubeck of Artifex has three rings she designed with Anup Jogani in Sotheby’s upcoming Gem Drop sale.
FinancialsNov 05, 2025
Pandora Posts Modest Q3 Sales Growth Amid ‘Weak’ Consumer Sentiment The company focused on marketing in the third quarter and introduced two new charm collections, “Pandora Talisman” and “Pandora Minis.”
FinancialsNov 05, 2025
Brilliant Earth’s Q3 Sales Climb 10%The jewelry retailer raised its full-year guidance, with CFO Jeff Kuo describing the company as “very well positioned” for the holidays.
Policies & IssuesNov 04, 2025
Supreme Court to Hear Tariffs Case WednesdayAhead of the hearing, two industry organizations co-signed an amicus brief urging the court to declare Trump’s tariffs unlawful.
MajorsNov 04, 2025
Danny Clark to Become Stuller CEO, Succeeding Matt StullerStuller COO Belit Myers will take on the additional role of president, with all changes effective at the start of 2026.
ColumnistsNov 04, 2025
Peter Smith: What Do Birds Have to Do With the Price of Gold? Smith cautions retailers against expending too much energy on things they can’t control, like the rising price of gold.
TrendsNov 04, 2025
Amanda’s Style File: Fall Colors for November BirthdaysCitrine and topaz are birthstones fit for fall as the leaves change color and the holiday season approaches.
IndependentsNov 04, 2025
Weston Jewelers Heads to Fort LauderdaleThe family-owned jeweler will open its fourth store in Florida in late 2027.
CrimeNov 03, 2025
Men Dressed as Construction Workers Burglarize Jeweler’s Home The NYPD is looking for three men who stole a safe and jewelry valued at $3.2 million from the home of a jeweler in Jamaica Hills, Queens.
MajorsNov 03, 2025
Matthew Rosenheim Takes Over as JA Board ChairThe trade organization also announced its executive committee and five new directors.
CollectionsNov 03, 2025
Muse’s ‘Have a Heart’ Collab Returns, Now With DDGThe “Have a Heart x Diamonds Do Good” collection is championed by model and humanitarian Flaviana Matata and will benefit her foundation.
AuctionsNov 03, 2025
Kashmir Sapphire Ring Tops Christie's Online AuctionThe ring, set with a nearly 17-carat Kashmir cabochon sapphire, sold for $1 million.
TrendsOct 31, 2025
Piece of the Week: A Spinner Fit for ‘Frankenstein’This “Mother Father” spinner necklace from Heavenly Vices Fine Jewelry draws inspiration from Victorian Era jewelry.
CrimeOct 31, 2025
5 More Arrested in Louvre Heist, Jewelry Still Missing The suspects were rounded up in Paris and its suburbs on Wednesday night, but none of the stolen jewels were recovered with them.
Recorded WebinarsOct 31, 2025
Watch: How to Master Google Reviews for Your BusinessExperts share top tips on how to encourage positive reviews and handle negative feedback.
Supplier BulletinOct 30, 2025
Protect Your Customers and Your BusinessSponsored by the Gemological Institute of America
CrimeOct 30, 2025
29-Year-Old Man Charged in Multiple Seattle-Area Smash and Grabs The suspect faces charges in the August robbery of Menashe & Sons Jewelers and is accused of committing smash and grabs at two pawn shops.
Lab-GrownOct 30, 2025
Alison Lou’s New Collection Uses Lab-Grown Diamonds and ResinThe “Lumière Fine” collection was born from designer Alison Chemla’s interest in the transformative power of light.
TrendsOct 30, 2025
Amanda’s Style File: A Haunted HalloweenShow off your spooky side with these 12 festive jewels.
