Sourcing

Lucara Elevates 2 Women to Leadership Positions

SourcingFeb 27, 2018

Lucara Elevates 2 Women to Leadership Positions

Eira Thomas is the diamond miner’s new CEO while co-founder Catherine McLeod Seltzer joins the board of directors.

2018_Eira-Thomas.jpg
Eira Thomas is the new CEO of Lucara Diamond Corp., replacing the retiring William Lamb. Lucara operates the Karowe mine in Botswana.

Vancouver--Lucara, the company that recovered a 1,109-carat diamond in Botswana, announced Monday that it has a new CEO.

Eira Thomas, a co-founder of the mining company, is taking over for William Lamb, who is retiring from Lucara and also stepping down from its board of directors. 

Joining the board is another of the company’s co-founders, Catherine McLeod Seltzer, the current chair of Bear Creek Mining Corp. and a director of Kinross Gold.

Thomas has more than 25 years’ experience in the mining industry, most recently serving as CEO of Kaminak Gold Corp. before its 2017 acquisition by Goldcorp for $520 million. 

She spent 16 years with Aber Diamond Corporation (now Dominion Diamond), where she moved up from geologist to vice president of exploration to a director of the board. She also was a co-founder and, later, CEO and executive chairman of Canadian miner Stornoway Diamond Corp.

Thomas started Lucara in 2007 with Seltzer and Lukas Lundin, and stayed on as a director.

Lamb has been CEO of Lucara since April 2008, during which time the Karowe mine has become one of the world’s highest-margin diamond mines and a major producer of large, Type IIA stones.

In addition to the 1,109-carat Lesedi La Rona, which sold for $53 million last fall, the mine also produced the 813-carat Constellation Diamond, which went for a record $63.1 million.

During Lamb’s tenure, the company also adopted both autogenous milling and the use of X-ray transmission sorters to ensure big diamonds weren’t broken up during the sorting process. 


The 812.77-carat Constellation Diamond, one of two major stones unearthed at Lucara’s Karowe mine in Botswana under departing CEO William Lamb’s tenure.

Also on Monday, Lucara announced its acquisition of Clara Diamond Solutions Corp. for $29 million.

Clara is a digital platform that uses algorithms to match up rough diamond production with polished manufacturing demands on a stone-by-stone basis.

Lucara said the platform can be integrated with blockchain technology. It also noted that the platform can eliminate the need for fixed sales cycles, which would reduce carrying costs across the supply chain.

It said it plans to begin using Clara in the coming months with a selection of rough from the Karowe mine.

After that, Lucara will scale the system to accommodate rough diamonds from other companies.
Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

Saks Fifth Avenue flagship window installation
MajorsJan 02, 2026
Marc Metrick Out as CEO of Saks Global

Executive Chairman Richard Baker will take over the role as rumors swirl that a bankruptcy filing is imminent for the troubled retailer.

Couture Retailer Liaison Jan Mohr
Events & AwardsJan 02, 2026
Jan Mohr, Couture’s ‘North Star,’ Dies at 71

Mohr had just retired in June after more than two decades as Couture’s retailer liaison.

Lalaounis good luck charm 2026
CollectionsJan 02, 2026
Lalaounis’ 2026 Good Luck Charm Speaks to Resilience

This year’s good luck charm features the mythical horse Pegasus, and is our first Piece of the Week of the new year.

Recipients Collage 2025 - NJ (1872 x 1050 px) (1872 x 1052 px).png
Brought to you by
Impacting Tomorrow Today

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

Collage of NationalJeweler.com’s most-read stories of 2025
EditorsDec 31, 2025
The Top 5 Stories of 2025

Articles about crime, engagement rings, and a necklace worn in the World Series generated the most interest among readers.

Weekly QuizDec 23, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Becka Johnson Kibby
MajorsDec 30, 2025
Becka Johnson Kibby to Lead Edge Retail Academy

As part of the leadership transition, Sherry Smith will take on the role of vice president of coaching strategy and development.

Bulova x Stetson collection
WatchesDec 30, 2025
Bulova, Stetson Collab on Watches With Western Flair

The new Bulova x Stetson designs highlight two animals often associated with the American West—the bison and the Texas Longhorn.

roseco-catalog.png
Brought to you by
Roseco Releases New Full-Line Catalog

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

Rahaminov Diamonds Pop-Up at Yamron Jeweler
CollectionsDec 30, 2025
Rahaminov Diamonds Pops Up in Florida

Its residency at Yamron Jewelers will run through May 2026.

In Memoriam collage 2025
IndependentsDec 29, 2025
In Memoriam: Industry Friends We Lost in 2025

From influential executives to innovative designers, we pay tribute to the people we said goodbye to this year.

Tanishq Orlando store exterior
MajorsDec 29, 2025
Tanishq Opens New Stores in Florida, Virginia

The retailer is expanding into areas with large Indian and South Asian populations.

Nanis Madonna di Campiglio Flagship
MajorsDec 29, 2025
Nanis Opens First Flagship Store

The Italian brand has opened its first flagship amid the peaks of the Dolomites in Madonna di Campiglio, Italy.

Amethyst Geodes Unearthed: Raw Beauty
SourcingDec 29, 2025
‘Unearthed: Raw Beauty’ Exhibition Opens at LA Museum

The new curation at the Natural History Museum of Los Angeles County showcases rare gem and mineral specimens in their uncut, natural state.

Stock image of gavel
CrimeDec 24, 2025
LA Jewelry District Couple Pleads Guilty to Hiding Millions from IRS

The couple pleaded guilty to concealing at least $127 million in cash transactions at its precious metals businesses.

People shopping in winter clothes
SurveysDec 24, 2025
Consumer Confidence Falls Again in December

Consumers shared concerns about prices, inflation, tariffs, trade, and politics in the survey’s write-in response section.

Bonhams US headquarters
AuctionsDec 24, 2025
Bonhams to Open New U.S. Flagship in NYC

In February 2026, the auction house will move its headquarters to the former Steinway Hall, a neoclassical landmark on Billionaires’ Row.

Hana Kaneko rings
Events & AwardsDec 24, 2025
NYC Jewelry, Antique, & Object Show Announces Winter Event

The new show will take place Jan. 23-25, 2026.

Brian Patrick Gilbertson
SourcingDec 23, 2025
Mining Titan Brian Gilbertson Dies at 82

The former BHP Billiton leader and Gemfields chairman is remembered for his influential leadership throughout his 50-year mining career.

Costume Designers Guild Award By Bulgari
Events & AwardsDec 23, 2025
Bulgari Reimagines Costume Designers Guild Award

The LVMH-owned brand has partnered with the costume design union to revamp its award for 2026.

Kering logo
MajorsDec 23, 2025
Kering to Acquire Stake in Raselli Franco Group

The luxury titan inked a deal to acquire an initial minority stake in the jewelry manufacturer with a pathway to full ownership by 2032.

For Future Reference Vintage
MajorsDec 23, 2025
For Future Reference Vintage Enters Bloomingdale’s

The company’s curation of unsigned vintage and estate jewelry debuted at the Bloomingdale’s in Costa Mesa, California.

Counterfeit Cartier and Audemars Piguet watches
CrimeDec 22, 2025
Customs Seizes Hundreds of Fake Rolex, Cartier Watches

In the recent multi-shipment seizure, CBP also found counterfeit Audemars Piguet, Moncler, and Chrome Hearts items.

Helzberg new store concept rendering
EditorsDec 22, 2025
How Helzberg Is Reimagining Its Stores

Helzberg’s Chief Retail Officer Mitch Maggart shared details about its tests of a new store concept rooted in an elevated luxury experience.

Graphic for the 2025 Year-End Webinar
Recorded WebinarsDec 22, 2025
2025 Jewelry Rewind: Looking Back on an Eventful Year

Jewelers of America execs and National Jeweler editors discuss tariffs, the sky-high gold price, and the engagement that broke the internet.

Pair of Ippolita Lollatini earrings
MajorsDec 19, 2025
MadaLuxe Group Acquires Ippolita

The luxury goods company said founder Ippolita Rostagno will remain at the brand’s helm.

Bulgari CEO Laura Burdese
MajorsDec 19, 2025
LVMH Names New Bulgari CEO

Laura Burdese, who joined the Italian luxury brand in 2022, will take on the role in July.

Harwell Godfrey Lil Buddies
EditorsDec 19, 2025
2025 Jewelry Superlatives: A Yearbook-Style Year in Review

The National Jeweler editors revisit the most noteworthy industry happenings and design trends from 2025.

×

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