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

Jeffrey Zimmer Reeds Jewelers
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.

Sothebys salon new bond street
AuctionsOct 16, 2025
Sotheby’s Introduces Custom Jewelry Service

The new high jewelry design and production process takes 30 days or less from concept to completion, the auction house said.

Oscar Heyman 2025 Holiday Catalog Cover
MajorsOct 16, 2025
Oscar Heyman’s Holiday Catalog Is Out, and It’s Spectacular

The holiday catalog for 2025 features never-before-seen images of more than 100 one-of-a-kind masterpieces.

LIM-401 2024 National Jeweler Supplier Bulletin- iD100 Web and Eblast FINAL (2) (1).jpg
Brought to you by
Protect Your Customers and Your Business

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

Foundrae United in Love Campaign Imagery
CollectionsOct 16, 2025
Foundrae Adds To ‘United in Love’ Collection

The brand has released a second installment of its collection of traditional and non-traditional commitment heirlooms.

Weekly QuizOct 16, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Kathy Corey
IndependentsOct 15, 2025
Retailer Hall of Fame 2025: Kathy Corey

Corey rescued New England chain Day’s Jewelers, preserving its legacy with strong people skills, pragmatism, and a “get-it-done” attitude.

Colorado jeweler Peter Damian Arguello
CrimeOct 15, 2025
Men Receive Lengthy Prison Sentences for 2023 Murder of Colorado Jeweler

Charles Robinson Shay was sentenced to life in prison plus 120 years while his accomplice, Michael James McCormack, got 75 years.

ja_fall_2024_by_headshot_stories_6824.jpg
Brought to you by
JA New York Fall Is Right Around the Corner

The upcoming show provides savvy retailers with the opportunity to stock their cases with best sellers in advance of the holiday season.

Douriean Fletcher Messenger Collection
Events & AwardsOct 15, 2025
‘Douriean Fletcher: Jewelry of the Afrofuture’ Opens at MAD

The Museum of Arts and Design's new exhibition features 75 pieces by the designer, best known for her work in the “Black Panther” films.

Logo for Timepieces at Luxury
Events & AwardsOct 15, 2025
JCK, Luxury to Debut New Watch Section in Vegas Next Year

Timepieces at Luxury will take place at The Venetian and, like Luxury, will be invitation-only for the first two days.

Max Fawcett Claibourne Poindexter
AuctionsOct 15, 2025
Christie's Announces New Jewelry Department Leadership

The auction house named a new global head of jewelry, as well as a new head of the jewelry department for the Americas.

Schwanke-Kasten Jewelers, Tom Dixon
IndependentsOct 14, 2025
Retailer Hall of Fame 2025: Tom Dixon

As chairman of Schwanke-Kasten Jewelers, Tom Dixon has been tasked with honoring the past and shaping the future of the family-run store.

Katty Villapando Lyte and Mica Rencher of Shimmer LLC
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.

Cooper Flagg family at Day’s Jewelers
IndependentsOct 14, 2025
Day’s Jewelers Crafts Custom Jewelry for No.1 NBA Draft Pick Cooper Flagg

The parents of the Dallas Mavericks rookie bought their engagement ring at a Day’s store in Bangor, Maine, in 1997.

Astrid & Miyu 2025 12-Day, 24-Day, Solid Gold Advent Calendars
CollectionsOct 10, 2025
Count Down to the Holidays With Astrid & Miyu’s Advent Calendars

The trio of Advent calendars include a version with 18-karat gold and lab-grown diamond jewelry in a red lacquer jewelry box.

Front of Marla Aaron porcelain Nymphenburg Lock
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.

Alisa Bunger Frederick Goldman
MajorsOct 10, 2025
Frederick Goldman Names New VP of Sales

Jewelry industry veteran Alisa Bunger has taken on the role.

Fabergé Imperial Winter Egg
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.

Kessler watch battery recycling program
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.

Katkim Men’s Collection Shadow Pendant Necklace and Anerise Signet Band
CollectionsOct 09, 2025
Katkim Launches First Men’s Collection

The line includes a “Shadow” series crafted exclusively for the new men’s offering and reimagined styles from the brand’s core collections.

Gemfields Rough Rubies
SourcingOct 09, 2025
Gemfields’ Mini Mixed-Quality Ruby Auction Garners $11M

The rough on offer was recovered from a newer area at the Montepuez mine.

“Storied Diamond Desert Sands of Eternity” engagement ring and wedding band
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.

Emily P. Wheeler Ombré Collection Campaign
CollectionsOct 08, 2025
Emily P. Wheeler Shifts Into Neutral for Latest ‘Ombré’ Collection

The champagne colorway in her newest “Ombré” collection combines white and trendy brown diamonds, a departure from her usual vibrant hues.

MRK x MFA Tsuba Charm Necklace Collection Campaign
CollectionsOct 08, 2025
Tsuba Designs Inspire Monica Rich Kosann’s New Charms

Kosann partnered with the Museum of Fine Arts, Boston, to create a set of necklaces inspired by the artwork on samurai sword handguards.

Stock image of a gavel and law books
CrimeOct 07, 2025
Men Who Posed as Utility Workers Found Guilty in Jeweler’s Murder

Carlos Jose Hernandez and Joshua Zuazo face life in prison for the October 2024 murder of 72-year-old Detroit-area jeweler Hussein Murray.

Zoë Kravitz Wearing Jessica McCormack Tempest Sapphire Pendant and Tempest Diamond Necklace
CollectionsOct 07, 2025
Jessica McCormack Looks to Sea Spirits for ‘Tempest’ Collection

The brand’s first high jewelry collection, “Tempest” plays with movement while calling to mind the folklore of the sea.

Lightning Ridge Rural Fire Brigade
SourcingOct 07, 2025
Columbia Gem House Announces ‘Opals for Outback Heroes’ Fundraiser

Proceeds from its jewelry raffle will go to a volunteer-run fire and rescue group in the Lightning Ridge area of New South Wales, Australia.

×

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