Sourcing

Rio Tinto Unveils ‘Impossibly Rare’ Violet Diamond

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.

20160506_Argyle-Violet.jpg
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.

Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

Lunar Rain cat locket
Events & AwardsJun 09, 2025
And the Winners of the 2025 Couture Design Awards Are …

Designers were recognized in 12 categories, from platinum to pearls, before the evening ended with a new, retail-focused award.

Nancy Astor tiara
AuctionsJun 09, 2025
Nancy Astor’s Cartier Tiara Sells for $1.2M

The rare turquoise and diamond jewel was the top lot at Bonhams’ June jewelry sale.

2025 National Jeweler Retailer Hall of Fame inductees
Events & AwardsJun 09, 2025
Here Are the 2025 Retailer Hall of Fame Inductees

This year’s honorees include a Midwest retailer and two multi-store independents, one in New York and the other in New England.

Jewelers of America logo with meetup, State of the Majors, giveaway and massages
Brought to you by
Jewelers of America is Headed to Las Vegas for JCK 2025

The countdown is on for the JCK Las Vegas Show and JA is pulling out all the stops.

2025 CASE Award Submission Graphic
Events & AwardsJun 09, 2025
CASE Awards Now Accepting Entries For 2025

The deadline to submit is June 16.

Weekly QuizJun 05, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
RDI Diamonds and Lavalier Personal Jewelry Insurance Logos
MajorsJun 09, 2025
RDI Diamonds Partners With Lavalier

The diamond wholesaler is working with the insurance provider to seamlessly offer personal jewelry insurance to RDI retailers’ clients.

Harwell Godfrey Granny Square Eleanor Necklace
CollectionsJun 06, 2025
Piece of the Week: Harwell Godfrey’s ‘Granny Squares Eleanor’ Necklace

As an homage to iconic crochet blankets, the necklace features the nostalgic motif through a kaleidoscope of cabochon-cut stones.

DCA-student-cert-NJ1872x1052-2.png
Brought to you by
The True Power Behind the Counter: Why Sales Associates Are the Heart of the Jewelry Business

When investing in your jewelry business, it's important not to overlook the most crucial element of success: the sales associates.

 Laura Gallon Joaillerie “Dynasty” ring, Bijules “Compass” bolo tie, Löf “The Orbitalis” ring
Events & AwardsJun 05, 2025
The 12 Fresh Faces in Couture’s Design Atelier

Discover the dozen up-and-coming brands exhibiting in the Design Atelier for the first time.

Daymond John
Events & AwardsJun 05, 2025
Daymond John to Give Keynote at JCK Las Vegas

The entrepreneur and “Shark Tank” star will share his top tips for success.

Vaishali Banerjee and Pallavi Sharma
MajorsJun 05, 2025
Platinum Guild International Updates Leadership Team

Two existing executives have been given new roles.

Meredith Tiderington
Events & AwardsJun 05, 2025
Zillion Announces 'Women in STEM' Scholarship Recipient

Meredith Tiderington, an electrical engineering student, was selected for the award.

The Gemological Institute of America’s logo
Lab-GrownJun 04, 2025
GIA Reverting to More General Terminology for Lab-Grown Diamonds

It will quit assigning the stones specific color and clarity grades in favor of applying “new descriptive terminology.”

Exterior of the Venetian and the Las Vegas Sphere
Events & AwardsJun 04, 2025
As JCK Talks Returns, Don’t Miss These 12 Sessions

From design trends to sustainability, here’s a roundup of can’t-miss education sessions at JCK Las Vegas.

JCK show
CrimeJun 04, 2025
10 Safety Tips for the Las Vegas Shows

The Jewelers’ Security Alliance offers advice for those attending the annual trade shows.

Amy Curran
MajorsJun 04, 2025
Amy Curran Promoted at Hill & Co.

Her new role is director of strategic initiatives.

The eight rings in Viviana Langhoff’s AU79 jewelry collection
CollectionsJun 03, 2025
In Her Latest Collection, Viviana Langhoff Is Leaning Into Gold

The designer is embracing bold pieces with weight to them in “AU79,” a collection she celebrated with a creative launch party.

Gold and diamond bangles on a pair of jeans
FinancialsJun 03, 2025
Signet Jewelers Sees Turnaround in Q1 With Sales Ticking Up 2%

On an earnings call, CEO J.K. Symancyk discussed what’s working for the company and how it’s preparing for the potential impact of tariffs.

Woman’s hand holding shopping bags
SurveysJun 03, 2025
Consumer Confidence Improves in May

The index partially rebounded after months of decline, due in part to the U.S.-China deal to temporarily reduce import tariffs.

Dakota Johnson as Roberto Coin Brand Ambassador
CollectionsJun 03, 2025
Dakota Johnson Is Roberto Coin’s New Brand Ambassador

The actress stars in the latest campaign set in Venice, Italy, and is set to participate in other creative initiatives for the jeweler.

Mason Kay Jade necklace
GradingJun 03, 2025
Mason-Kay Jade Adds ‘Fei Cui’ to Jade Reports

The company has joined other labs, including GIA and Lotus Gemology, in adopting the Chinese term for "jadeite jade."

Adobe Stock image of skyline of Bangkok, Thailand
GradingJun 02, 2025
GSI Opens New Lab in Thailand

Located in Bangkok, the laboratory is Gemological Science International’s 14th location worldwide.

Seaman Schepps pearl earrings
TrendsJun 02, 2025
Amanda’s Style File: Three Gems for June

Those born in June have a myriad of options for their birthstone jewelry.

David Allouche
SourcingJun 02, 2025
David Allouche Joins Grandview Klein Diamonds

The diamond industry veteran has been named its senior sales executive.

Movado Connect 2.0 watches
FinancialsMay 30, 2025
Movado’s Q1 Sales Slip Amid ‘Challenging’ Retail Environment

The company plans to raise the prices of select watches to offset the impact of tariffs.

Zoë Chicco Bracelets
Policies & IssuesMay 30, 2025
Tariffs & Designers: Navigating Pricing in an Unstable Environment

Between tariffs and the sky-high cost of gold, designers enter this year’s Las Vegas shows with a lot of questions and few answers.

Renato Cipullo Hematite Blaze Necklace
CollectionsMay 30, 2025
Piece of the Week: Renato Cipullo’s ‘Hematite Blaze’ Necklace

Designed by founder Renato and his daughter Serena Cipullo, it showcases a flame motif representing unity and the power of gathering.

×

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