SourcingJul 22, 2021
De Beers’ 2021 Production On Pace With 2019 SourcingAug 27, 2021
Petra Sells 2 Big Diamonds Into Partnership With Stargems for $14M
The 342.92-carat rough white diamond and the 18.30-carat rough blue diamond will be cut and polished in South Africa.
Petra has sold this 342.92-carat Type IIa white diamond into a partnership with Stargems for an upfront payment of $10 million, the diamond miner recently announced.
London—Petra Diamonds announced it has sold two notable diamonds into a partnership with Stargems for nearly $14 million total.
According to the miner, a 342.92-carat Type IIa white diamond and an 18.30-carat Type IIb blue diamond, both of which were recovered at the Cullinan mine in South Africa, have been sold into the partnership.
Petra said it will receive an upfront payment of $10 million for the former and $3.5 million for the latter.
This comes to about $29,161 per carat for the rough white diamond and about $191,257 for the rough blue diamond.
Petra will also retain a 50 percent interest in the profit of the polished proceeds for both after costs.
Stargems is the Johannesburg-based subsidiary of vertically integrated diamond company Stargems Group and is a diamond beneficiation licensee, which means the two diamonds will be cut and polished at the Stargems factory in Johannesburg, South Africa.
“These two diamonds are wonderful examples of the very high quality and rare white and blue diamonds that are so well known from the Cullinan Diamond Mine,” said Petra CEO Richard Duffy.
“We are delighted that both stones will be manufactured in South Africa, and it is fitting that we will be working with Stargems, who specializes in the sourcing and supply of the finest diamonds to customers across the world.”
Related stories will be right here …
According to the miner, a 342.92-carat Type IIa white diamond and an 18.30-carat Type IIb blue diamond, both of which were recovered at the Cullinan mine in South Africa, have been sold into the partnership.
Petra said it will receive an upfront payment of $10 million for the former and $3.5 million for the latter.
This comes to about $29,161 per carat for the rough white diamond and about $191,257 for the rough blue diamond.
Petra will also retain a 50 percent interest in the profit of the polished proceeds for both after costs.
Stargems is the Johannesburg-based subsidiary of vertically integrated diamond company Stargems Group and is a diamond beneficiation licensee, which means the two diamonds will be cut and polished at the Stargems factory in Johannesburg, South Africa.
“These two diamonds are wonderful examples of the very high quality and rare white and blue diamonds that are so well known from the Cullinan Diamond Mine,” said Petra CEO Richard Duffy.
“We are delighted that both stones will be manufactured in South Africa, and it is fitting that we will be working with Stargems, who specializes in the sourcing and supply of the finest diamonds to customers across the world.”
Editors' Picks
Sponsored by
More on Sourcing
The Latest
MajorsAug 21, 2025
Claire’s Finds Buyer, Could Save up to 950 StoresThe retailer, which recently filed Chapter 11, inked a deal to sell its North American business and intellectual property.
MajorsAug 21, 2025
Target Names New CEO as Sales Continue to Lag Target CEO Brian Cornell will step down in February and be replaced by the company’s chief operating officer, Michael Fiddelke.
Policies & IssuesAug 21, 2025
JA, IDMA Talk Tariffs With Execs in DC The group met with the president's senior trade advisor earlier this week to express the industry’s concerns about the effects of tariffs.
Brought to you by
Rallying Call for the Jewelry Industry on Tariffs and Other Key IssuesJewelers of America is leading the charge to protect the industry amidst rising economic threats.
MajorsAug 21, 2025
Tiffany & Co. Pops Up at 2025 US OpenThe pop-up will display this year's Tiffany & Co. Singles Championship trophies along with a diamond-encrusted tennis racket and ball.
Weekly QuizAug 15, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
IndependentsAug 20, 2025
Bellman’s Jewelers Opens Second Store After COO's TikTok Takes OffThe New Hampshire-based store has expanded to Boston, propelled by the success of Alex Bellman’s TikTok page, “The Truthful Jeweler.”
CrimeAug 20, 2025
Another CA Jewelry Store Rammed With Car, RobbedThe latest incident happened Monday at a store in Oakland, California, continuing a pattern JSA first warned about last month.
Brought to you by
Taking the Moment Head On: How Rio Grande Champions the Present & Future of Fine JewelryAs a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.
WatchesAug 20, 2025
Oris Launches Watch Benefiting NYC Harbor Oyster RestorationThe new aqua green New York Harbor Limited Edition II is the watchmaker’s second collaboration with the Billion Oyster Project.
Events & AwardsAug 20, 2025
Take the Jewelers for Children ‘Trinity of Purpose’ ChallengeParticipants who attend any three Rings of Strength events will be awarded a special medal.
ColumnistsAug 19, 2025
Peter Smith: The Arrival Fallacy and Jewelry RetailSmith shares wisdom he gleaned from a podcast he was listening to one morning while being walked by his dog, a Malshi named Sophie.
CrimeAug 19, 2025
Customs Seizes 7,300 Pairs of Fake ‘Alhambra’ EarringsThe counterfeit Van Cleef & Arpels jewels would have been worth more than $30 million if genuine.
MajorsAug 19, 2025
MJSA Apprenticeship Program Is Nationally RecognizedThe MJSA Mentor & Apprenticeship Program received the Registered Apprenticeship Program designation by the U.S. Department of Labor.
WatchesAug 19, 2025
Casio America Names New Timepiece Division ManagerCasio executive and watch enthusiast Masaki Obu is the new general manager of its U.S. timepiece division.
MajorsAug 18, 2025
Verragio’s Michael Barabash, a ‘Kind Soul,’ Dies at 58Barabash, Verragio’s client relations representative, was a vital member of the team and is remembered as being warm and full of life.
CollectionsAug 18, 2025
John Hardy’s New ‘Dot’ Collection Is on PointOriginally introduced in 1992, the “Dot” collection is back with a capsule featuring five archival designs and three new creations.
Events & AwardsAug 18, 2025
IJO Announces 2025 Vendor of the YearAllison-Kaufman has received the honor for the fourth year in a row.
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.
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.
WatchesAug 15, 2025
Audemars Piguet Acquires Majority Stake in ManufacturerIts investment in micromechanics expert Inhotec will preserve skills essential to the watchmaking industry as a whole, said the company.
MajorsAug 15, 2025
Rio Grande Names New Marketing DirectorNicolette Bianchi joins the wholesale provider with more than 15 years of cross-industry experience in marketing and product development.
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.
MajorsAug 14, 2025
Casio America Names New CEOLongtime Casio executive Yusuke Suzuki is the new president and CEO of Casio’s U.S. subsidiary.
TrendsAug 13, 2025
Cristiano Ronaldo Proposes With Gigantic Oval-Cut DiamondModel Georgina Rodríguez received a rock of an engagement ring, with her diamond estimated to be 35 carats, experts say.
SourcingAug 13, 2025
ICA Names 2025 Board of DirectorsThe board elected 9 new directors at its recent ICA Congress in Brazil.
TrendsAug 13, 2025
Colorado Jeweler, Whiskey Maker Collab on Ring GiveawayThree winners will receive a custom ring from Honest Hands Ring Co. inlaid with a piece of history from Denver-based distillery Stranahan’s.
SurveysAug 13, 2025
These Are The 25 Hottest Retailers, Says NRFJD Sports and Wawa were among the fastest-growing retail companies in the U.S. last year.
