WatchesMar 26, 2026
Q&A: Citizen Watch America President Jeffrey Cohen on Eco-Drive’s 50th AnniversaryCohen discusses the evolution of Citizen’s light-powered technology, the brand’s cross-generational appeal, and tariffs.
SourcingMay 06, 2016
Rio Tinto Unveils ‘Impossibly Rare’ Violet Diamond
It is 2.83 carats, oval cut, GIA color-graded as a fancy deep grayish blue violet and will lead Rio Tinto’s Argyle Pink Diamonds Tender this year.
The 2.83-carat Argyle Violet is “impossibly rare and limited by nature,” said Patrick Coppens, general manager of sales for Rio Tinto Diamonds, and will be “highly sought after for its beauty, size and provenance.”
Melbourne, Australia--Last year, Rio Tinto made an astounding discovery at its Argyle mine in Western Australia and never said a word about it.
The diamond mining company unearthed a 9.17-carat piece of rough that yielded a stone Rio Tinto Diamonds’ Patrick Coppens describes as “impossibly rare”--a 2.83-carat fancy deep grayish blue violet diamond that it dubbed the “Argyle Violet.”
It is the largest violet diamond ever recovered from the mine. And now it will embark on a world tour, of sorts, as part of the 2016 Argyle Pink Diamonds Tender.
The Gemological Institute of America assigned the oval-shaped stone a color grade of fancy deep grayish blue violet. In a peer-reviewed article in the spring 2009 edition of Gems & Gemology, the GIA noted that the Argyle mine is the world’s only known source of type IaB hydrogen- and nitrogen-rich diamonds colored gray to blue to violet. The article also noted that the more violet-hued stones in this range are colored by nickel defects.
Rio Tinto said the Argyle Violet has a clarity of SI1.
When asked for an estimated sale price, the mining company said it is difficult to know what the stone will sell for given the rarity of violet diamonds but noted that “violet diamonds sit in the limited company of red diamonds as an indicator of value.”
In November 2014, Christie’s Hong Kong auctioned a heart-shaped 2.09-carat SI2 fancy red for $5.1 million, or $2.44 million per carat.
If the Argyle Violet garners the same per-carat price, its sale price will total nearly $7 million.
The oval-shaped Argyle Violet will be the star of the 2016 Argyle Pink Diamonds Tender, Rio Tinto’s annual sale of rare diamonds from its Argyle mine in Western Australia. The mine produces 90 percent of the world’s pink diamonds.
The tender will commence with private trade viewings in June, traveling to Copenhagen, Hong Kong and New York. More details on other diamonds in the tender will be released at its launch in Copenhagen in early June.
The closing bid date for the tender is Oct. 12.
More on Sourcing
The Latest
IndependentsMar 26, 2026
Peter Smith Pens Book on Human Behavior in Sales“Essentially Human: On Sales and Salespeople" reveals the underlying human traits and behaviors of the most successful sales professionals.
CollectionsMar 26, 2026
Lionheart Celebrates 13 Years of ‘Cassandane’The collection features symbols of love, luck, and light, based on the story of Queen Cassandane and Cyrus the Great of Persia.
Brought to you by
Protect Your Customers and Your BusinessYou deserve to know what you are selling–to protect your customers as well as your business and your reputation.
Events & AwardsMar 26, 2026
NAJA, Instappraise Introduce New ScholarshipIt’s the third scholarship to be launched as part of the partnership to help appraisers advance their professional credentials.
Weekly QuizMar 19, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
Events & AwardsMar 26, 2026
JA Still Accepting Entries for 2026 CASE AwardsThe deadline for entries in the jewelry design competition has been extended to April 3.
GradingMar 25, 2026
New York’s Natural History Museum, Wiley To Build Minerals DatabaseWiley said the project will give scientists worldwide access to the American Museum of Natural’s History renowned mineral collection.
Brought to you by
Is This You? Every Jeweler Has This Problem; We Have the Solution.Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.
CollectionsMar 25, 2026
Boochier Turns Flower Friendship Bracelets Into Fine JewelryThe “Flower Puff” collection looks to beaded flower friendship bracelets from childhood, turning the silhouette into nostalgic fine jewelry.
Policies & IssuesMar 25, 2026
Community for Ethical Jewelry to Host Bench Jeweler Shortage WebinarSet for April 2, the webinar will discuss how the jewelry industry can address the workforce gap.
IndependentsMar 24, 2026
Lisa Bayer, Illustrator and Beloved Member of the Muse Family, Dies at 64Bayer, founder of Lisa Bayer Designs, is remembered as “a bright light in every room.”
AuctionsMar 24, 2026
White Diamonds Shine In Christie's Jewels Online SaleThe highest-grossing lot was a Tiffany & Co. ring set with a flawless, emerald-cut diamond of 10 carats.
WatchesMar 24, 2026
Christie’s Names New Senior Specialist, WatchesFormer Sotheby’s executive Tom Heap has taken on the London-based role.
CrimeMar 23, 2026
NYPD Looking for 3 Jewelry Store Robbery SuspectsThe group of women allegedly robbed two Catbird stores and one Gorjana location on the afternoon of March 9.
FinancialsMar 23, 2026
Movado’s Q4 Sales Rise As Demand Grows From Younger Shoppers, WomenMovado CEO Efraim Grinberg noted continued strength in the fashion watch and accessible luxury segments in the U.S.
TrendsMar 23, 2026
Marco Bicego’s New Campaign Showcases ‘The Art of Craft’After celebrating 25 years in 2025, the campaign marks a new chapter for the jewelry brand with the message that “Identity Creates Value.”
Events & AwardsMar 23, 2026
These Watch Brands Are Heading to Couture This YearCouture and Time to Watches announced the watch brands, from big names to independents, attendees will see at the show.
FinancialsMar 20, 2026
Macy’s Turnaround Plans Shows Promise, Boosted by Bloomingdale’sPlus, why Saks Global’s bankruptcy may have given Bloomingdale’s an edge.
AuctionsMar 20, 2026
Sotheby's, De Beers Unveil ‘Jwaneng 28.88’ DiamondThe flawless, Type IIa stone is estimated to achieve up to $2.8 million at the auction house’s high jewelry sale in April.
TrendsMar 20, 2026
‘Frankenstein’ Costume Designer Is Bejeweled In Brooches for Oscars WinCostume designer Kate Hawley wore three archival Tiffany & Co. brooches, our Pieces of the Week, while accepting her first Oscar.
FinancialsMar 19, 2026
Signet Jewelers to Close 100 Stores, Shutter James Allen BannerThe jewelry retailer announced changes to its store network and brand portfolio during its fourth-quarter earnings call.
SurveysMar 19, 2026
NRF Forecasts 4% Retail Sales Growth in 2026From a weaker labor market to inflation, NRF Chief Economist Mark Mathews gave insight on what retailers can expect this year.
AuctionsMar 19, 2026
26-Carat Diamond Tops $1M at AuctionThe historic stone, which sold at Elmwood’s in London, is the largest white diamond to be offered on the U.K. market in more than a decade.
Events & AwardsMar 19, 2026
JCK Rocks To Ride With NellyThree-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach in Las Vegas on May 31.
AuctionsMar 18, 2026
Collection of the ‘Severely Beautiful’ Lady Wardington Fetches $161KThe model and fashion editor’s gold evening bags were the top lots at the London sale, going for more than $25,000 each.
PodcastsMar 18, 2026
Episode 3: An Interview With Jewelry Designer Johnny NelsonFresh off winning the David Yurman Gem Awards Grant, Nelson discusses the ring that launched his career and his plans for the future.
SourcingMar 18, 2026
Lucara Recovers Nearly 37-Carat Blue DiamondThe “stunning” Type IIb stone was found via x-ray technology at its Karowe mine in Botswana.
