Sourcing

Gübelin’s Blockchain for Gems Now Open to the Industry

SourcingFeb 13, 2019

Gübelin’s Blockchain for Gems Now Open to the Industry

The Swiss gem lab’s Provenance Proof technology debuted during AGTA GemFair.

20190213_Gubelin-blockchain.jpg
Gübelin’s blockchain technology, piloted with Fura Gems’ Colombian emeralds, is now open for the entire industry to use.
Tucson, Ariz.—Gübelin’s blockchain for colored stones, developed in partnership with Everledger, is now available to the entire industry.

The Swiss gem lab launched its Provenance Proof Blockchain during AGTA GemFair, officially opening its use to the trade.

Now, any professional stakeholder along the supply chain can register and, after a standard “Know your Customer” check, start using it.

It’s been a little more than a year since Gübelin announced it was developing the program to trace colored gemstones from mine to market, which it calls the first of its kind in the world.

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. It includes the lab’s “Emerald Paternity Test.”

Gübelin’s blockchain aims to track a stone as early in the supply chain as possible to build a record of each rough gemstone’s journey. The owner or custodian of the stone is then able to contribute certain information to the log book through to, and including, the end consumer.

Fura Gems was the mining pilot partner, offering goods at its Coscuez Colombian emerald mine as test subjects for the blockchain technology. 

The Gübelin family shouldered the cost of developing the technology, which means it is free to use for anyone in the trade.

“The industry has been changing and consumers are now interested in transparency, and this was my main motivation … to support blockchain and this whole initiative because I think we need to change now,” Raphael Gübelin, president of the House of Gübelin, said in Tucson.

To help keep it inclusive, every process, including the registration and upload of the data, can be done on a smartphone.

Visibility is restricted to the user in custody of the gemstone, and only is allowed upstream—meaning the current users can see who had the gemstone before them but do not see where it goes once it leaves their possession—though Everledger CEO Leanne Kemp told National Jeweler during an interview after the launch event that it could be reversed to allow someone at the beginning of the chain to see subsequent actions should users give permission to do so.

Gübelin Gem Lab Managing Director Daniel Nyfeler also noted that the lab has no privileged insight into specific data of the blockchain; the lab itself can only see the information entered into the blockchain relating to the stones it is entrusted with testing.

WATCH: Gübelin Explains How the Blockchain Works
During the Tucson launch event, Nyfeler outlined some of the benefits the lab sees to the transparency that comes from blockchain. In addition to the social responsibility aspect of it, it could help reduce the risks that stops many banks and other institutions from financing the trade.

He said it also makes economic sense to embrace it; blockchain could offer greater visibility for companies along the supply chain and offer retailers the full information to build the story behind a stone.

Nyfeler, along with Kemp, Raphael Gübelin, Fura Gems Vice President Marketing and Sales Rupak Sen, and Pat Syvrud, minerals, materials and society program development manager at the University of Delaware, took part in a panel after presentations during the Tucson launch.

During the panel, Nyfeler addressed one of the biggest criticisms of blockchain—it does not have the ability to prevent a user from entering false data that then appears legitimate as it is locked into the blockchain.

“Blockchain is not the silver bullet that’s going to bring 100 percent trueness in the industry immediately, but … it’s going to be much easier to determine over time and see patterns, and you’re going to see where such wrong information might come from, which so far is not the case and that’s the point where we were starting from,” he said.

When an attendee also asked whether the small-scale miners would care about becoming a part of this, Nyfeler said it was up to the industry to encourage them to do so.

Looking to the future, he told National Jeweler that Provenance Proof, like De Beers’ Tracr, is a long-term venture that eventually will be spun off as its own company.

A supervisory board will be entrusted with making strategic decisions, such as data security and compliance issues, and will consist mostly of individuals independent of the gemstone industry “in order to minimize the risk of conflicting interests.”

And since certain segments of stakeholders will have specific needs related to the use of the blockchain, such as a large-scale miner or wholesaler wanting interfaces to allow for the automated upload or exchange of the company’s inventory system, Provenance Proof—not Gübelin Gem Lab—will oversee designing, building and implementing solutions to address these needs. 
Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

GCAL 8X_NJSB_1.jpg
Supplier BulletinNov 05, 2026
Winning With GCAL 8X®: What’s Working at the Counter

Sponsored by GCAL by Sarine

Wrapped holiday gift boxes
SurveysNov 05, 2026
What Retailers Should Know About Holiday Shoppers This Year

From shrinking budgets to AI elves, here are five takeaways from holiday reports by Bain, Adobe, Mastercard, NRF, and insights from YouGov.

Little Pet Portrait Pendants by Russell Jones & Judi Powers
CollectionsNov 05, 2026
Judi Powers, Russell Jones Unleash Joy With New Collaboration

The designers combined their talents for Little Pet Portraits, hand-painted miniatures of our best friends set in a piece of jewelry.

overnight btyb 1026.png
Brought to you by
How Overnight Mountings’ Bridal Builder Makes Custom Engagement Ring Design Easier to Sell

With customization becoming more expected in engagement ring shopping, the Bridal Builder makes the process tangible.

Brilliant Earth Elizabeth Taylor jewelry
FinancialsNov 05, 2026
Brilliant Earth Continued to Resonate With High-Income Shoppers in Q3

Its non-bridal fine jewelry remains the star of the show, recently launching new collections inspired by Elizabeth Taylor and Jane Goodall.

Weekly QuizOct 29, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Swarovski Joy: The Swarovski Musical Campaign with Ariana Grande
MajorsNov 05, 2026
Ariana Grande Stars In Swarovski’s Holiday Campaign

“Joy: The Swarovski Musical” features Ariana Grande as the leading lady in scenes inspired by classic musical montages.

GIA logo
GradingNov 05, 2026
GIA to Offer Next-Day Holiday Services

The lab will bring back its complimentary next-day service for some reports starting next week.

DeBeersICONS_TITLE1_CUSTOMCONTENT_1872x1052 (1).jpg
Brought to you by
A Diamond Is Forever Launches 2026 Holiday Campaign Championing Natural Diamonds

A Diamond Is Forever's holiday campaign reimagines natural diamond icons for a new generation celebrating individuality.

Cartier bracelet and ring
CrimeNov 04, 2026
$250K+ in Undeclared Cartier Jewelry Seized at Philadelphia Airport

A Pennsylvania woman failed to declare a ring and a bracelet, discarding the boxes and receipts to conceal the purchases, officials said.

Pandora celestial chandelier earrings
FinancialsNov 04, 2026
Pandora’s Q3 Sales Up 7% Amid Focus on Design

New collections and relevant marketing pushed the company forward, while Pandora’s lab-grown diamond sales continue to lag.

NYC Jewelry Week Biolgems Jewelry Exhibition
Events & AwardsNov 04, 2026
NYC Jewelry Week 2026 Is the Largest Edition Yet

The citywide celebration, slated for Nov. 16-22, is set to host more than 175 events, including live jewelry-making demos.

Lanessa Elrod
MajorsNov 04, 2026
Bergdorf Goodman Names New President

Lanessa Elrod, former president and CEO of Louis Vuitton Americas, has stepped into the role as the retailer celebrates 125 years.

Replica of Infinity Gauntlet
AuctionsNov 03, 2026
Infinity Gauntlet Set With 170+ Carats of Colored Gemstones Up for Auction

A replica of one of the most powerful objects in the Marvel Cinematic Universe, the glove is heading to auction next month in Abu Dhabi.

Arthur Klein
IndependentsNov 03, 2026
Longtime Jewelry Marketer Arthur Klein Dies at 89

Klein, who had his own marketing agency and worked for Gabriel & Co. and Trans American Diamond, is remembered as a kind man.

Zadok Jewelers
IndependentsNov 03, 2026
Zadok Jewelers Toasts To 50 Years With Diamond Bracelet Giveaway

To enter the giveaway, locals can purchase a featured beverage from one of eight participating restaurants in Houston and Austin, Texas.

David Yurman Gem Awards Grant 2027 Graphic
Events & AwardsNov 03, 2026
David Yurman Gem Awards Grant Opens 2027 Applications

The grant recipient will be awarded $50,000 as well as mentoring meetings with executives at David Yurman and other industry executives.

Kirstin Viland, Joanna Kovacs, Shari Lukacs
Events & AwardsNov 03, 2026
NAJA, Instappraise Name 2026 Scholarship Winners

The winners include a non-NAJA member seeking training, a member beginning NAJA courses, and a member becoming a Certified Master Appraiser.

Sothebys Romanov sapphire
AuctionsNov 02, 2026
197-Carat ‘Romanov Sapphire’ Heads to Sotheby’s Geneva

The rare jewel, which has links to Russia’s Romanov dynasty, is estimated to fetch up to $2 million.

Fake Audemars Piguet watch
CrimeNov 02, 2026
Customs Seizes More Than 400 Fake Audemars Piguet Watches

It is one of several seizures of counterfeit jewelry and watches by U.S. Customs and Border Protection officials in Louisville this year.

Jewelers of America new board members
MajorsNov 02, 2026
Lawrence Bock, Caryl Capeci, Amanda Coleman-Phelps Join JA Board

Jewelers of America announced the additions to its board of directors following its annual general meeting, held last week.

Kristi Yamaguchi Wearing Always Dream Collection
CollectionsNov 02, 2026
Olympian Kristi Yamaguchi, Heller Jewelers Expand ‘Always Dream’ Collection

The jewelry collection supports Yamaguchi’s Always Dream foundation, which provides reading and educational resources to families in need.

2026 AGTA Spectrum & Cutting Edge Awards Best Of Winners
Events & AwardsOct 30, 2026
Illuminating Carved Paraiba Pendant, Suite of Moonstones Wow at Spectrum Awards

Spectrum’s “Best of Show” honors went to a 101-carat Paraiba carved to look like Medusa that has a magnet-activated LED light.

Edina Kiss Eye Pendants on Charm Necklace
TrendsOct 30, 2026
Edina Kiss’ Pendants Say ‘Eye’m Watching You’

Our Halloween Pieces of the Week are four “Eye” pendants, each set with colorful gemstones.

Alexis Hoopes
MajorsOct 30, 2026
The RealReal Hires Former eBay Exec as New Chief Merchandising Officer

Alexis Hoopes expanded eBay’s “Authenticity Guarantee” program during her tenure.

Rolex store exterior Bellevue Washington
WatchesOct 29, 2026
Bucherer Opens Rolex Boutique in Washington State

The Rolex-owned retailer’s new 4,700-square-foot store’s façade honors the Pacific Northwest’s evergreen forests.

Norma Wellington spider web pendant
TrendsOct 29, 2026
Amanda's Style File: All Treats, No Tricks

Get into the Halloween spirit with this roundup of 13 spooky jewels.

Ann Cahoon
MajorsOct 29, 2026
Gesswein Hires Longtime Bench Jeweler, Educator Ann Cahoon

Cahoon was appointed strategic account and educational program manager at Gesswein, which recently joined Continental Buying Group.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy