IndependentsAug 14, 2026
Smyth Jewelers to Open Fourth LocationThe family-owned jeweler will open a new showroom in Bel Air, Maryland, this fall.
SourcingMay 15, 2019
Stargems Group Buys 424-Carat Diamond
The company paid a little less than $15 million for the rough diamond, or about $35,000 per carat.
Petra Diamonds sold this 424.89-carat rough diamond to Stargems Group/Choron for a little less than $15 million.
London—Mining company Petra Diamonds announced Tuesday that it has sold the 400-plus-carat diamond it unearthed earlier this spring.
Discovered in late March, the rough stone weighed 424.89 carats after cleaning, and was sold to Stargems/Choron (Belgium) BVBA for “just under $15 million.” (The exact purchase price was not disclosed.)
This means the D color, Type IIa diamond went for about $35,000 per carat. The current price-per-carat record for a rough diamond is $77,649, set in May 2016 by the 812.77-carat “Constellation” diamond.
The 425-carat diamond was mined at the famed Cullinan mine and dubbed the “Legacy of the Cullinan Diamond Mine.”
Originally owned by De Beers and sold to Petra Diamonds in 2007, the mine is known for churning out large, important stones, including the largest rough diamond ever found, the 3,106-carat Cullinan (the mine was called Premier when the stone was found in 1905, later changing its name to link it to this historic stone), and the 29.6-carat rough blue diamond that later was cut into the 12-carat “Blue Moon” diamond, which sold at auction for nearly $50 million.
Petra CEO Richard Duffy called the transaction a “significant” sale for the company, while Stargems Chairman Shailesh Javeri said: “The Cullinan Diamond Mine has produced some of the most iconic diamonds the world has ever seen and, as a key client of Petra Diamonds, we are honored to have the opportunity to polish the ‘Legacy of the Cullinan Diamond Mine.’”
Editors' Picks
Sponsored by
The Latest
CrimeAug 14, 2026
Wife of Man Convicted in Jeweler’s Murder Sentenced for Conspiracy Amanda Ileana Hernandez is married to Carlos Hernandez, one of two men in prison for the 2024 murder of Michigan jeweler Hussein Murray.
TrendsAug 14, 2026
Paul Morelli’s Latest ‘Wavey Vine’ Earrings Embrace ColorThe reimagined jewel, our Piece of the Week, trades the diamonds in the original 1998 design for blue, pink, yellow, and green sapphires.
Brought to you by
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying EventsRetailers are seeking new ways to attract customers, increase traffic, and create revenue – Estate buying events are a popular solution.
Supplier BulletinAug 13, 2026
Your Piece Could Be the One Editors Talk AboutSponsored by American Gem Trade Association
Weekly QuizAug 13, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
FinancialsAug 13, 2026
Pandora’s ‘Talisman’ Collection Shines, Lab-Grown Diamond Sales FallIn the United States, second-quarter sales were flat amid soft consumer sentiment and lower in-store traffic.
AuctionsAug 13, 2026
This Gold Cadbury ‘Conundrum’ Egg Set a World Auction RecordThe 22-karat gold egg, sold at Batemans Auctioneers in the U.K., was part of a 1980s treasure hunt ad campaign for Cadbury Creme Eggs.
Brought to you by
Wedding Band Trends 2026: Personalization Takes Center StageColored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.
CollectionsAug 13, 2026
John Hardy Infuses ‘Icon,’ ‘Heishi’ Collections with ColorThe expanded collections now feature hand-cut gemstones like topaz, tanzanite, chrysoprase, chalcedony, smoky quartz, and fire opal.
Lab-GrownAug 13, 2026
Jean Dousset Opens Third StoreThe lab-grown diamond jewelry brand’s newest boutique is in Westfield Valley Fair in Santa Clara, California.
CrimeAug 12, 2026
Elderly NYC Woman Targeted in Jewelry Swap SchemeTwo suspects offered to trade the woman a “winning” lottery ticket for her jewelry.
SourcingAug 12, 2026
Another Diamond Mine Poised to CloseFinsch has been in business rescue since May, and owner Petra Diamonds said it sees no viable path forward for the mine.
CrimeAug 12, 2026
Jewelry Store Employee Gets 20 Years to Life in Choking Death of BossMichel Patrick DeSalles was sentenced after pleading guilty to the 2017 murder of Omid Gholian, who owned a jewelry store in Manhattan.
MajorsAug 12, 2026
Frederick Goldman Names New SVP of SalesLongtime industry executive Beth Miller has taken on the role.
AuctionsAug 11, 2026
Verdura Unicorn Brooch With Royal Connection Up for Auction The brooch was owned by Virginia Fortune Ryan Ogilvy, who served as a lady of the bedchamber to Queen Elizabeth II for nearly 50 years.
MajorsAug 11, 2026
Signet Jewelers Selects Mattel Exec to Lead Zales, BanterJamie Cygielman will take on the role on Aug. 24.
IndependentsAug 11, 2026
Polly’s Fine Jewelry Co-Owner Richard Moore Dies at 69Moore, Polly’s husband, is remembered as a family man with an easygoing spirit and a love for sports and the outdoors.
ColumnistsAug 11, 2026
Creative Connecting: How to Sell Colored Gemstones to Gen ZDuvall O’Steen and Jen Cullen Williams share the best ways to display, present, and explain colored gemstones to younger customers.
Events & AwardsAug 11, 2026
NAJA Announces Lineup For 2026 Fall Virtual ConferenceThe mid-year conference for jewelry and watch appraisers will take place Sept. 5-6 on Zoom.
TechnologyAug 10, 2026
Colorado Jeweler Launches Customization Tool He Built HimselfHonest Hands Ring Co. Founder Benjamin Bosworth shared his thoughts on jewelry technology and why AI can never replace the human element.
MajorsAug 10, 2026
QVC Exits Chapter 11 Bankruptcy, Names New Interim CEOQVC Group President and CEO David Rawlinson is temporarily being replaced by a familiar face, former QVC CEO Mike George.
CollectionsAug 10, 2026
State Property Puts a Ripple in the ‘The Voyager’ CollectionThe brand also added two one-of-a-kind brown diamond pieces to the “Sanssouci” series of its “Gardens” collection.
MajorsAug 10, 2026
And IJO’s 2026 Vendor of the Year Is … Ostbye took home top vendor honors at the Independent Jewelers Organization’s show, held last month in Kentucky.
Supplier BulletinAug 07, 2026
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying EventsSponsored by Stratus Estate Buyers
MajorsAug 07, 2026
Retail Veteran Pam Cloud Appointed President of Blue NileCloud, who will officially join Blue Nile on Monday, spent 26 years at Tiffany & Co. and founded jewelry brand Roseate.
MajorsAug 07, 2026
Pandora Appoints Paulo Garcia as New CFO Garcia will take over from the company’s current CFO, Anders Boyer, who is retiring at the end of November.
MajorsAug 07, 2026
Etsy to Lay Off 12% of WorkforceEtsy CEO Kruti Patel Goyal explained why the company is letting go more than 200 employees as its performance improves.
