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

Image of Winona Ryder and Iman from Pandora’s Be Love marketing campaign
FinancialsAug 15, 2025
In Q2 Results, Pandora Talks Tariffs, Q4 Plans

The company had a solid second quarter, with sales of non-charm jewelry outpacing sales of pieces in its core collections.

Taylor Swift Etho Maria ruby earrings The Life of a Showgirl TS12
EditorsAug 15, 2025
Piece of the Week: Etho Maria’s Showgirl-Approved Ruby Drop Earrings

Taylor Swift dons the vibrant pair in new promotional imagery for her upcoming album, “The Life of a Showgirl,” set to release in October.

Audemars Piguet Starwheel Watch
WatchesAug 15, 2025
Audemars Piguet Acquires Majority Stake in Manufacturer

Its investment in micromechanics expert Inhotec will preserve skills essential to the watchmaking industry as a whole, said the company.

rio-article photo-diamond.jpg
Brought to you by
Taking the Moment Head On: How Rio Grande Champions the Present & Future of Fine Jewelry

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

Nicolette Bianchi
MajorsAug 15, 2025
Rio Grande Names New Marketing Director

Nicolette Bianchi joins the wholesale provider with more than 15 years of cross-industry experience in marketing and product development.

Weekly QuizAug 15, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Pippa Small Myanmar Fish Cluster
CollectionsAug 14, 2025
In Midst of ‘Sardine Girl Summer,’ Pippa Small Looks to ‘Flounder Fall’

Her new “Ocean” collection was inspired by Myanmar’s traditional articulated fish jewelry, with depictions of flounder, catfish, and more.

Casio America CEO Yusuke Suzuki
MajorsAug 14, 2025
Casio America Names New CEO

Longtime Casio executive Yusuke Suzuki is the new president and CEO of Casio’s U.S. subsidiary.

an instructor and a student in a bench jewelry classroom
Brought to you by
Investing in the Next Generation of Bench Jewelers

The Seymour & Evelyn Holtzman Bench Scholarship from Jewelers of America returns for a second year.

Cristiano Ronaldo and Stephanie Gottlieb Ring
TrendsAug 13, 2025
Cristiano Ronaldo Proposes With Gigantic Oval-Cut Diamond

Model Georgina Rodríguez received a rock of an engagement ring, with her diamond estimated to be 35 carats, experts say.

Whiskey Barrel Ring
TrendsAug 13, 2025
Colorado Jeweler, Whiskey Maker Collab on Ring Giveaway

Three winners will receive a custom ring from Honest Hands Ring Co. inlaid with a piece of history from Denver-based distillery Stranahan’s.

People shopping in a mall
SurveysAug 13, 2025
These Are The 25 Hottest Retailers, Says NRF

JD Sports and Wawa were among the fastest-growing retail companies in the U.S. last year.

Columbia Gem House Winza sapphires and rubies
SourcingAug 13, 2025
Columbia Gem House Launches Winza Sapphires, Rubies

The new inventory, all untreated, features vibrant hues and unique bicolor combinations.

Gemfields Faberge
SourcingAug 12, 2025
Gemfields Sells Fabergé for $50M

Acquired by a tech investor, the historic brand will continue to focus on jewelry, accessories, and timepieces.

Shipping containers on a ship
Policies & IssuesAug 12, 2025
Higher Tariff on Chinese Imports Paused for 90 Days, Trump Says

President Donald Trump issued an executive order extending the pause on higher tariffs to November as negotiations with China continue.

Jacquie Aiche Thunderbird Slab Collection Campaign
CollectionsAug 12, 2025
Jacquie Aiche’s New Collection Harnesses the Energy of the Thunderbird

The “Thunderbird Slab” collection features a thunderbird motif as a symbol of power, protection, and boundless possibility.

Duvall O’Steen and Jen Cullen Williams
ColumnistsAug 12, 2025
Creative Connecting: How to Take a Better Headshot

Columnists Jen Cullen Williams and Duvall O’Steen share tips on how to elevate your professional image.

Vigil for slain Wheat Ridge, Colorado jeweler Peter Damian Arguello
CrimeAug 11, 2025
Man Convicted of First-Degree Murder in Death of Colorado Jeweler

Peter Damian Arguello, a jeweler in the Denver suburb of Wheat Ridge, was found dead inside his store in November 2023.

Lisa Bridge
IndependentsAug 11, 2025
Lisa Bridge to Depart Ben Bridge Jeweler

The retailer, owned by Berkshire Hathaway, is becoming part of the Berkshire Hathaway Jewelry Group with Helzberg.

Bethenny Frankel
Events & AwardsAug 11, 2025
Bethenny Frankel to Give Keynote at CBG’s Experience Show

The Continental Buying Group’s 2025 Tampa Experience Show is slated for Sept. 8-10.

Nora Kühner fashion design consulting trend forecast colors 2027
EditorsAug 11, 2025
The Colors Expected to Be On-Trend in a Couple Years

Associate Editor Lauren McLemore recently attended a fabrics trade show where a trend forecaster shared her predictions for summer 2027.

Brilliant Earth Jolie Mosaics engagement ring
FinancialsAug 08, 2025
Brilliant Earth’s Q2 Sales Up 3% as Engagement Ring Sales Rise

The company raised its full-year sales guidance while noting it has not yet assessed the potential impact of the latest tariff news.

Jewellers for Hope charity event
Events & AwardsAug 08, 2025
GJEPC’s Jewellers for Hope Celebrates 10 Years of Fundraising

The organization has raised more than $1.3 million for charity since its inception.

Rahaminov Diamonds Emerald-Cut Diamond Bezel Bangle
TrendsAug 08, 2025
Piece of the Week: Rahaminov Diamonds’ Bezel Bangle

The brand’s latest iteration of a bezel-set diamond bangle features clean lines and a timeless design for a new modern silhouette.

Black and white photo of Tony Bennett near a microphone
WatchesAug 07, 2025
Bulova’s New Collection Honors Tony Bennett

The first watch in the series commemorates his participation in the Civil Rights movement, marching from Selma to Montgomery in 1965.

Sapphire page in Chatham’s “Ultimate Lab-Grown Catalog”
Lab-GrownAug 07, 2025
Chatham Releases Catalog for Loose Lab-Grown Gemstones

The catalog contains a complete listing of all the loose gemstones in stock, as well as information about the properties of each stone.

Rembrandt Blue Jay, Hummingbird, Cardinal Bird Charms
TechnologyAug 07, 2025
Rembrandt Charms Debuts New Website, Bird Charms

The company added a retailer dashboard to its site and three new birds to its charm collection, the cardinal, blue jay, and hummingbird.

Shipping containers on a ship
Policies & IssuesAug 06, 2025
Tariff on India to Rise to 50%, Trump Says

An additional 25 percent tariff has been added to the previously announced 25 percent.

×

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