FinancialsDec 02, 2025
Signet Jewelers’ Q3 Sales Up Amid Continued Focus on Lower Price PointsThe retailer offered more fashion jewelry priced under $1,000, including lab-grown diamond and men’s jewelry.
SourcingMay 24, 2016
122.52-carat blue diamond unearthed in S. Africa
Petra Diamonds has announced the recovery of another big blue rough diamond, this one a 122.52-carat stone found at its Cullinan mine.
London--Friday the 13th wasn’t an unlucky day for Petra Diamonds Ltd.
On Friday, the company announced the recovery of another big blue rough diamond, this one a 122.52-carat stone found at the Cullinan mine in South Africa, which is considered one of the world’s top sources of blue diamonds.
The mine has produced the largest rough gem diamond on record to date, the 3,106-carat Cullinan diamond.
Petra did not make any definitive statements about the stone’s quality, stating only that it would require further analysis to assess its potential value and optimal route to market. Because of this, the mining company said it does not expect to sell the diamond before the close of its fiscal year on June 30.
Petra acquired the Cullinan mine in 2008. Since that time, it has produced four rough blue diamonds that were 25 carats or larger.
In 2008, the same year it purchased the mine, Petra recovered a 39.9-carat piece of blue rough which sold for $8.8 million, or $220,551 per carat.
The 7-carat fancy vivid blue diamond sold at Sotheby’s in 2009 for $9.49 million, or $1.35 million per carat, and named the “Star of Josephine” was cut from a 26.6-carat piece of rough recovered at Cullinan.
In addition, the mine produced a 25.5-carat stone that sold for $16.9 million, or $663,144 per carat, in 2013 and a 29.6-carat rough blue diamond that sold in February 2014 for $25.6 million, or $862,780 per carat.
Based in London, Petra is a publicly traded diamond mining company listed on the London Stock Exchange. In addition the Cullinan mine, the company has five other producing mines in South Africa: the Finsch, Koffiefontein, Kimberley Underground and Helam. In addition, Petra operates the Williamson mine in Tanzania and maintains an exploration program in Botswana.
More on Sourcing
The Latest
CollectionsDec 02, 2025
Briony Raymond Introduces First FragranceThe eau de parfum is held in a fluted glass bottle that mirrors the decor of the brand’s atelier, and its cap is a nod to its “Sloan” ring.
MajorsDec 02, 2025
Lee Krombholz Takes Over as Chair of MJSA Education FoundationIn addition, a slate of new officers and trustees were appointed to the board.
Brought to you by
Impacting Tomorrow TodayHow Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.
IndependentsDec 02, 2025
RJO Welcomes Its 1,200th Retail MemberWitt’s Jewelry in Wayne, Nebraska, is the organization’s new milestone member.
Weekly QuizNov 20, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
CrimeDec 01, 2025
Fourth Man Charged in Louvre Jewelry HeistThe man, who has a criminal history, is suspected of being the fourth member of the four-man crew that carried out the heist.
AuctionsDec 01, 2025
Christie’s Presents ‘Splendor & Style’ CollectionThe single-owner collection includes one of the largest offerings of Verdura jewels ever to appear at auction, said Christie’s.
Brought to you by
Roseco Releases New Full-Line CatalogRoseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.
IndependentsDec 01, 2025
Lustig Jewelers’ New Owner Is a Fellow Chicago JewelerMichael Helfer has taken the reins, bringing together two historic Chicago jewelry names.
MajorsDec 01, 2025
PGI Debuts Platinum-Filled Holiday Gift GuideThe guide features all-new platinum designs for the holiday season by brands like Harwell Godfrey, Ritani, and Suna.
FinancialsNov 26, 2025
Movado CEO Talks Tariffs, Growing Interest in Accessible Luxury WatchesDuring its Q3 call, CEO Efraim Grinberg discussed the deal to lower tariffs on Swiss-made watches, watch market trends, and more.
TrendsNov 26, 2025
Piece of the Week: Rosior’s Pumpkin RingRosior’s high jewelry cocktail ring with orange sapphires and green diamonds is the perfect Thanksgiving accessory.
IndependentsNov 26, 2025
Greenwich St. Jewelers Launches Colorful Holiday CampaignThe “Embrace Your True Colors” campaign features jewels with a vibrant color palette and poetry by Grammy-nominated artist Aja Monet.
MajorsNov 26, 2025
Serafino Consoli Names New VP of Sales, Brand Development for the AmericasLuxury veteran Alejandro Cuellar has stepped into the role at the Italian fine jewelry brand.
Events & AwardsNov 26, 2025
Grandview Klein Presents 4 Scholarships in NamibiaThe company gave awards to four students at the Namibia University of Science & Technology, including one who is a Grandview Klein employee.
IndependentsNov 25, 2025
Pearl Stringer Margaret Hoisik DiesShe is remembered as an artist who loved her craft and was devoted to her faith, her friends, and her family.
SourcingNov 25, 2025
Finestar Opens Diamond Manufacturing Facility in JohannesburgIt joins the company’s other manufacturing facilities globally, including in India, Botswana, and Namibia.
TrendsNov 25, 2025
Amanda’s Style File: Polka DotsThe polka dot pattern transcends time and has re-emerged as a trend in jewelry through round-shaped gemstones.
CrimeNov 25, 2025
Former Arizona AG Official Charged With Trafficking Stolen JewelryVanessa Hickman, 49, allegedly sold a diamond bracelet that was mistakenly sent to her home.
Events & AwardsNov 25, 2025
GIA Awards Susan Jacques With Its Highest HonorGIA’s former president and CEO was presented with the Richard T. Liddicoat Award for Distinguished Achievement.
Recorded WebinarsNov 24, 2025
Watch: Top Tips for Social Media EtiquetteSocial media experts spoke about protecting brand reputation through behaving mindfully online.
WatchesNov 24, 2025
Breitling Reveals Plans for Gallet, Universal GenèveIn 2026, the three will come together as “House of Brands,” with Gallet sold in Breitling stores and Universal Genève sold separately.
CollectionsNov 24, 2025
Muse Debuts a Wicked 'Have a Heart x Cynthia Erivo' SequelThe second drop, which includes more Elphaba-inspired pieces from additional designers, will continue to benefit nonprofit Dreams of Hope.
IndependentsNov 24, 2025
J.R. Dunn Jewelers Names New PresidentSecond-generation jeweler Sean Dunn has taken on the role.
MajorsNov 21, 2025
Natural Diamond Council Names New CEOAmber Pepper’s main focus will be on digital innovation and engaging younger consumers.
SourcingNov 21, 2025
De Beers’ Branded, Traceable Diamonds Roll Out to 19 Retailers Called “Origin by De Beers Group,” the loose, polished diamonds are being sold in a total of 30 stores in the United States and Canada.
CollectionsNov 21, 2025
Piece of the Week: Melissa Kaye’s ‘Rocky Infinity’ NecklaceThe lariat necklace features a 4.88-carat oval-cut Zambian emerald in 18-karat yellow gold.
