MajorsSep 23, 2025
Mattioli Names Kering Exec as New CEOPolicies & IssuesSep 24, 2025
Diamonds Do Good Names Marcus ter Haar as President-Elect
He previously served as co-chair of the nonprofit’s beneficiary committee.
Marcus ter Haar has been appointed as Diamonds Do Good’s new president-elect.
New York—Diamonds Do Good (DDG) has announced Marcus ter Haar as its incoming president-elect.
His appointment, unanimously approved by the nonprofit’s board of directors, is effective Jan. 1, 2026.
Also on that date, Pete Engel, currently serving as president-elect, will assume the role of president.
Engel will succeed Kathy Corey and will serve until January 2028, when ter Haar will take over.
Ter Haar brings industry leadership experience spanning both public and private sectors.
He has championed initiatives that highlight the diamond sector’s contributions to national development, entrepreneurship, and youth empowerment, said DDG.
He previously served as co-chair of DDG’s beneficiary committee, where he helped guide the nonprofit’s global grantmaking strategy and partnerships.
In his new role, he will support Engel and work to ensure the nonprofit continues to grow its grantmaking, storytelling, and partnerships across Africa, India, and other diamond communities.
“Marcus brings a wealth of experience, perspective, and heart to Diamonds Do Good,” said Corey.
“His deep ties to Botswana and his commitment to sustainability and community development align perfectly with our mission of sharing how natural diamonds create positive impact.”
Ter Haar said he is honored to step into this role and continue building on the legacy of the leaders before him.
He added, “Diamonds Do Good represents the authentic, purpose-driven stories of how natural diamonds uplift communities worldwide. I look forward to working with the board and our partners to amplify this message and strengthen our impact.”
Related stories will be right here …
His appointment, unanimously approved by the nonprofit’s board of directors, is effective Jan. 1, 2026.
Also on that date, Pete Engel, currently serving as president-elect, will assume the role of president.
Engel will succeed Kathy Corey and will serve until January 2028, when ter Haar will take over.
Ter Haar brings industry leadership experience spanning both public and private sectors.
He has championed initiatives that highlight the diamond sector’s contributions to national development, entrepreneurship, and youth empowerment, said DDG.
He previously served as co-chair of DDG’s beneficiary committee, where he helped guide the nonprofit’s global grantmaking strategy and partnerships.
In his new role, he will support Engel and work to ensure the nonprofit continues to grow its grantmaking, storytelling, and partnerships across Africa, India, and other diamond communities.
“Marcus brings a wealth of experience, perspective, and heart to Diamonds Do Good,” said Corey.
“His deep ties to Botswana and his commitment to sustainability and community development align perfectly with our mission of sharing how natural diamonds create positive impact.”
Ter Haar said he is honored to step into this role and continue building on the legacy of the leaders before him.
He added, “Diamonds Do Good represents the authentic, purpose-driven stories of how natural diamonds uplift communities worldwide. I look forward to working with the board and our partners to amplify this message and strengthen our impact.”
More on Policies & Issues
The Latest
AuctionsJun 10, 2026
31.62-Carat ‘Azure Blue’ Diamond Sells For $8M+ at Christie’sIt was a banner day for blue gemstones, with another blue diamond topping $8 million and a 41-carat sapphire going for $2.3 million.
MajorsJun 10, 2026
Saks Global Receives Bankruptcy Court Approval for ReorganizationThe approval means the retailer is on track to exit bankruptcy proceedings this summer.
CrimeJun 10, 2026
2 Suspects Arrested in Texas Jewelry Store RobberyThe men are believed to be part of the group of several masked suspects that robbed Marc Robinson Jewelers in April.
Brought to you by
All Eyes on Gold Prices. Alternatives to Look For. And What to BEWARE of in VegasAs gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.
CollectionsJun 10, 2026
Sylvie Debuts ‘Elevated’ Bridal Collection Inspired By Designer’s RingThe bridal-focused brand is also launching its Custom Atelier this summer, a digital custom design tool for its authorized retailers.
Weekly QuizJun 05, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
EditorsJun 09, 2026
Q&A: Al Cook on the Lab-Grown ‘Bubble,’ Dwindling Diamond Supply The De Beers Group CEO also discussed tariffs, Desert Diamonds, and the pending sale of De Beers in an interview with Michelle Graff.
MajorsJun 09, 2026
Wilkerson's Russ Whitehouse RetiresThe industry veteran is bringing his 56-year run in the fine jewelry sector to an end.
Brought to you by
How Modern Training Is Becoming a Competitive Advantage for Jewelry RetailersWith the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.
Events & AwardsJun 09, 2026
Pride Month Panel to Highlight LGBTQ+ Jewelry VoicesThe panel discussion will feature LGBTQ+ leaders across the jewelry, luxury, and creative industries.
CollectionsJun 09, 2026
Marie Lichtenberg’s New Capsule Collection Is a Smash, LiterallyInspired by a locket that got run over, the “Smash” capsule collection reimagines the shape of Lichtenberg’s signature style.
MajorsJun 09, 2026
Frederick Goldman Names Director of Sales for SoutheastThe company has promoted Katherine Whitacre to the role.
MajorsJun 08, 2026
Stuller Expands Selection of Lab-Grown Diamonds, Demi-Fine JewelryThe jewelry manufacturer has added Taylor Swift-esque diamond shapes, and more silver, gold vermeil, and gold-plated jewelry.
SourcingJun 08, 2026
Sally Morrison to Depart De Beers This Summer Morrison has been marketing diamonds on and off since the early 2000s and said she is leaving to “pursue new projects.”
TrendsJun 08, 2026
Amanda’s Style File: June’s Birthstone TrioThose born in June can celebrate with pearl, alexandrite, and moonstone jewelry.
TechnologyJun 08, 2026
Overnight Mountings Launches Ring Builder PlatformThe platform allows retailers to guide clients through a customizable engagement ring buying experience in a branded interface.
IndependentsJun 05, 2026
Pennsylvania Jewelry Store To Close After 79 YearsJim Springer, owner of Dunkelberger’s Fine Jewelry, is heading into retirement.
SurveysJun 05, 2026
Consumers to Cut Back on Spending Amid Rising Prices, Survey Shows When conducting its May consumer confidence survey, The Conference Board asked extra questions about consumers’ budgeting strategies.
CollectionsJun 05, 2026
Rebel Jewelry’s Charm Symbolizes Perseverance for Pride MonthThe “Tunnel” charm, our Piece of the Week, celebrates Pride Month with its design inspired by hope and the light at the end of the tunnel.
SourcingJun 05, 2026
State of Diamonds: The Way Forward for Natural DiamondsThe jewelry industry is reassessing its positioning as Gen Z reshapes the retail landscape and lab grown continues to gain market share.
AuctionsJun 04, 2026
Treasures from Maurice Tempelsman’s ‘Marvelous’ Life Head to AuctionUp for auction at Sotheby’s, the collection of Tempelsman’s personal effects includes a Cartier Tank watch Jackie O. gifted him.
CollectionsJun 04, 2026
Buddha Mama to Spend the Summer in AspenThe Miami-based fine jewelry brand will host its first summer residency in the Colorado mountain town from June 5 to Aug. 23.
MajorsJun 04, 2026
AGS Honors Late Peter Yantzer, Holds Time Capsule CeremonyThe organization also announced its international board of directors for the 2026-2027 term.
MajorsJun 04, 2026
Neiman Marcus’ Downtown Dallas Store to Close in SeptemberSaks Global confirmed the closure this week, spelling the end for a store that’s been part of downtown Dallas for more than 100 years.
ColumnistsJun 03, 2026
Peter Smith: When Top Talent Leaves and What It Says About YouSmith discusses how managers should handle a top performer's exit, warning that a poor response could have a lasting impact.
GradingJun 03, 2026
GIA’s Tracr Investment Is First Step Toward Industry-Owned PlatformThe Gemological Institute of America is now a 30 percent stakeholder in Tracr, the De Beers-backed blockchain for diamonds.
WatchesJun 03, 2026
The 1916 Company Taking Pre-Owned Rolexes on the Road, AgainThe retailer is bringing Rolex Certified Pre-Owned watches to five U.S. cities in 2026 for collectors to see, try on, and purchase.
IndependentsJun 03, 2026
Jessica Alba Is the New Face of Gabriel & Co.The actress and entrepreneur stars in the jeweler’s new campaign that celebrates life’s quiet moments.
