Sourcing

Blue diamond nets $28M but falls short of record

SourcingSep 16, 2014

Blue diamond nets $28M but falls short of record

The 122.52-carat blue diamond recovered from the Cullinan mine sold for $27.6 million to a beneficiation partnership between the company that mined it, Petra Diamonds Ltd., and a “polishing partner” that wishes to remain anonymous.  

091714_PetraBlue-Article.jpg
Petra Diamonds Ltd. sold the 122.52-carat blue diamond it pulled out of the Cullinan mine in June for $27.6 million to a beneficiation partnership between Petra (15 percent) and an unnamed “polishing partner” (85 percent).

London--The 122.52-carat blue diamond recovered from the Cullinan mine sold for $27.6 million to a beneficiation partnership between the company that mined it, Petra Diamonds Ltd., and a “polishing partner” that wishes to remain anonymous. 

The sale price works out to $225,269 per carat.

While the stone fetched a high price, it did not set a new world record price for a rough diamond, as some analysts speculated it might. The world record price paid for a rough diamond stands at $35.3 million. 

The stone will be cut and polished. Upon its sale, Petra will receive its 15 percent share in the proceeds, after beneficiation and related expenses. 

The partner will settle its 85 percent of the agreed value immediately and Petra will count this as revenue in its fiscal results for the first quarter 2015.

A Petra spokesperson said that it followed its usual tender sales process for the diamond in Johannesburg, South Africa, as well as invited interested parties to submit partnership bids. He added that the benefits of this partnership are that not only does it yield a significant price for the rough stone but it allows Petra to share in the value of the stone when it’s polished.

The company has gone this route before, when Petra formed a partnership with Sotheby’s to cut and polish a 26-carat blue diamond that was subsequently sold at auction as a 7-carat polished gem.   

Petra acquired the Cullinan mine in 2008. Since then, it has produced a number of big diamonds and is considered one of the world’s top sources of blue diamonds.

Just last week, Petra extracted an exceptional 232.08-carat white diamond from Cullinan, a D color Type IIa diamond of “exceptional size and clarity,” according to the company. 

Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Gold jewelry on a scale
MajorsSep 10, 2025
Stuller to Swap Gold Scrap for Full Credit to Account

As the gold price rises, the manufacturer is offering a 100 percent payout through Sept. 30 for gold clean scrap.

Tiffany & Co Favrile Beetle Necklace in Frankenstein
TrendsSep 10, 2025
Tiffany & Co. Archival Jewels Bring Life to ‘Frankenstein’

Guillermo del Toro’s 2025 “Frankenstein” will feature 27 jewels and objects from the storied brand, including pieces from its archives.

24 Karat Club banquet
MajorsSep 10, 2025
24 Karat Club of New York’s Banquet to Return to Waldorf Astoria

The Waldorf Astoria New York’s grand reopening this past summer means a homecoming for the industry group’s annual event.

reDollar-fine-jewelry-department.jpg
Brought to you by
reDollar.com Is Rolling Out the Next Level Jewelry, Diamond & Watch Consignment Program

With their unmatched services and low fees, reDollar.com is challenging some big names in the online consignment world.

The Mellon Blue diamond
AuctionsSep 09, 2025
‘The Mellon Blue’ to Return to Auction, This Time at Christie’s

The 9.51-carat fancy vivid blue diamond, which set two world auction records at Sotheby’s in 2014, is estimated to fetch up to $30 million.

Weekly QuizSep 04, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Dianne Batista Phillips Auctions
AuctionsSep 09, 2025
Phillips Names Dianne Batista Head of Jewels, New York

The industry veteran joins the auction house as it looks to solidify its footprint in the jewelry market.

Anastacia Lauren, Elle Jerge, Logan Nye
MajorsSep 09, 2025
MJSA Education Foundation Announces 2025 Scholarship Winners

The nonprofit awarded four students pursuing a professional career in jewelry making and design with $2,250 each.

japac-btyb.png
Brought to you by
Rallying Call for the Jewelry Industry on Tariffs and Other Key Issues

Jewelers of America is leading the charge to protect the industry amidst rising economic threats.

Korman jewelry store Austin
IndependentsSep 08, 2025
Take a Look Inside the New Korman Store in Austin

The Texas-based jeweler has also undergone a brand refresh, debuting a new website and logo.

Logos for Manufacturing Jewelers & Suppliers of America and Jewelers of America
MajorsSep 08, 2025
MJSA Is Officially Now Under JA’s Umbrella

The two organizations have finalized and signed the affiliation agreement announced in May.

Sothebys JAR and Suzanne Belperron jewels
AuctionsSep 08, 2025
Sotheby’s To Auction ‘Exceptional’ Collection of JAR, Suzanne Belperron Jewels

The single-owner sale will headline Sotheby's inaugural jewelry auction at the Breuer building, its new global headquarters, this December.

A street in Carlsbad California
Events & AwardsSep 08, 2025
27 Can’t-Miss Converge Sessions, Events

From sunrise yoga to tariffs talks, these are some events to check out at the upcoming inaugural event.

National Jeweler columnist Peter Smith
ColumnistsSep 05, 2025
Peter Smith: A Lasting Lesson From Maurice Tempelsman

Smith recalls a bit of wisdom the industry leader, who died last week, shared at a diamond conference years ago.

Jamie Turner Victoria Labradorite Necklace
CollectionsSep 05, 2025
Piece of the Week: Jamie Turner’s ‘Victoria’ Necklace

The “Victoria” necklace features a labradorite hugged by diamond accents in 18-karat yellow gold.

Stock image of the U.S. Supreme Court
Policies & IssuesSep 05, 2025
Trump Takes Tariffs Case to the Supreme Court

Two lower courts have moved to block the import taxes, which will remain in place as the legal battle continues.

Patrick Mahomes Hublot campaign
WatchesSep 05, 2025
Patrick Mahomes Is the New Hublot Brand Ambassador

The Kansas City Chiefs quarterback shares Hublot’s dedication to pursuing greatness, the Swiss watchmaker said.

gia-edu main image.png
Supplier BulletinSep 04, 2025
A Brilliant Future Is Here

Sponsored by GIA

Lucara pink diamond
SourcingSep 04, 2025
Lucara Unveils Unusual 37-Carat Pink Diamond

The Type IIa stone, recovered from Botswana’s Karowe diamond mine last month, features unique coloration.

Shot from Breitling new NFL campaign
WatchesSep 04, 2025
Breitling Takes Its NFL Game to the Next Level

Breitling is now the NFL’s official timepiece partner, a move that puts the brand in front of the millions of Americans who watch football.

NYC Jewelry, Antique, & Object Show Autumn 2025
Events & AwardsSep 04, 2025
The NYC Jewelry, Antique, & Object Show Returns in November

NYCJAOS is set for Nov. 21-23 in New York City’s Chelsea neighborhood.

Fabergé x Gemfields Malaika Egg
SourcingSep 03, 2025
Gemfields Confirms Completion of Fabergé Sale

U.S.-based investment company SMG Capital LLC is the new owner of the luxury brand.

Claire’s storefront
MajorsSep 03, 2025
These Are the Nearly 300 Claire’s Stores Set to Close

A new court filing details the locations of the stores that will close, as well as the 830 that will remain open.

Stuller’s Tools, Equipment, & Metals and Findings & Metals Catalogs
MajorsSep 03, 2025
Stuller Releases 2 New Catalogs

The new catalogs are “Tools, Equipment, & Metals” and “Findings & Metals.”

Effy Jewelry Multicolor Sapphire Bangle
TrendsSep 03, 2025
Amanda’s Style File: A Perfect Birthstone

Sapphire’s variety of colors make it the perfect birthstone for September.

Woman with hands crossed wearing jewelry
FinancialsSep 02, 2025
Lab-Grown Diamonds, Lower-Priced Fashion Jewelry Drive Signet Jewelers’ Q2 Sales

The retailer has raised its guidance after seeing total sales increase 3 percent in the second quarter, beating expectations.

Jean-Christophe Bédos Birks
MajorsSep 02, 2025
Birks CEO Jean-Christophe Bédos Steps Down

Niccolò Rossi di Montelera, executive chairman of the board, was appointed as interim CEO.

Harry Winston Ginza Flagship Exterior, Interior
MajorsSep 02, 2025
Harry Winston Opens Its Largest Flagship in Japan

The three-floor space also features the jeweler’s largest VIP salon in Japan and offers an exclusive diamond pendant.

×

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