Sourcing

177-Carat Diamond Among the ‘Stars of the Arctic’

SourcingOct 09, 2018

177-Carat Diamond Among the ‘Stars of the Arctic’

It is one of three sizable rough diamonds from the Diavik Diamond Mine in Canada headlining Rio Tinto’s current tender of rough 10.8 carats or larger.

20181008_Diavik-header.jpg
The three diamonds dubbed the “Diavik Stars of the Arctic” are, from left to right, the 177.71-carat “Vega,” the 24.82-carat “Capella” and the 59.10-carat “Altair.” Rio Tinto is offering the diamonds via tender, with bids closing later this month.

London—The Diavik Diamond Mine in Canada has yielded three sizable rough diamonds—including one very rare yellow—and Rio Tinto will try to sell them this month.  

Ranging in size from 24 to nearly 178 carats, the stones are headlining Rio Tinto’s current “Specials” tender, a sale of rough diamonds that are 10.8 carats or larger.

Known collectively as the “Stars of the Arctic,” the biggest of the three is “Vega of the Arctic,” a 177.71-carat rough diamond that Rio Tinto said is one of the largest and most valuable gem-quality diamonds to ever come out of Canada. (The biggest diamond ever mined in Canada weighed 187.7 carats and also came from Diavik.)

RELATED CONTENT: The Biggest Diamond in Washington
The “Capella” is a 24.82-carat yellow diamond. Rio Tinto said the discovery of a yellow diamond of this size is “very rare;” the mine only produces about five per year on average, making it less than 0.001 percent of Diavik’s annual production.

The last diamond, the “Altair of the Arctic,” is a 59.10-carat white gem-quality rough.


Rio Tinto is currently showcasing the stones to large diamond specialists in Israel and Antwerp. Bids will close on Oct. 25.

The Diavik Diamond Mine is a joint venture between Rio Tinto (60 percent ownership) and Dominion Diamond Mines (40 percent ownership). Production at the mine started in 2003, went underground in 2012 and is expected to extend through 2025.

This summer, mine operators opened a fourth pipe at Diavik, the A21. The $350 million addition is anticipated to be a key source of incremental supply for the next four years.


Also this month for Rio Tinto, bids are closing on the2018 tender of red, violet and pink diamonds mined at Argyle in Western Australia, which the company brought to New York last week and includes the 2.28-carat fancy purplish-red “Argyle Muse,” pictured above.
Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

The Retail Smiths partner and National Jeweler columnist Peter Smith
ColumnistsJul 07, 2026
Peter Smith: Diamond Branding and the Origin Paradox

A podcast prompted Smith to share his views on where origin fits into the natural diamond story and the viability of branded diamonds.

Jewelers of America Impact Initiative Recipients 2026
Events & AwardsJul 07, 2026
JA Announces 2026 Impact Initiative Recipients

The association selected eight recipients for the funding program, which is in its second year.

Zahn Z In Rubies We Clicked
TrendsJul 07, 2026
Amanda’s Style File: Ruby, White and Blue

Whether celebrating America’s 250th birthday or the USA’s World Cup run, July birthstone jewelry can double as a patriotic accessory.

Brought-To-By-Article-Top-Image.jpg
Brought to you by
Wedding Band Trends 2026: Personalization Takes Center Stage

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

Police van outside of Musée Lalique
CrimeJul 07, 2026
Thieves Steal Millions in Jewels From France’s Musée Lalique

Around 20 pieces of jewelry were stolen from the museum dedicated to French jeweler and glassmaker René Lalique.

Weekly QuizJul 01, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Robinson Pelham Summer of ’96 Campaign
CollectionsJul 07, 2026
Robinson Pelham Is Partying Like It’s 1996

The “Summer of ’96” campaign and collection celebrate the year the brand was founded for its 30th anniversary.

Bachendorf’s New Dallas Location Exterior Rendering
IndependentsJul 06, 2026
Bachendorf’s To Open Fifth Store In Dallas

The new location is set to open this winter, featuring the retailer’s first rotating jewelry designer residency.

DCA-NJ-article-1872x1052-060826.jpg
Brought to you by
Building the Future of Jewelry Retail: DCA Expands Education, Leadership Development, and Workforce Solutions

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

Jung Kook for Graff
MajorsJul 06, 2026
Graff Names BTS Star Jung Kook as New Ambassador

The pop artist appears in the latest campaign for the “Laurence Graff Signature” collection.

Pandora pearl jewelry campaign imagery
CollectionsJul 06, 2026
Pandora’s New Baroque Pearl Collection Is a Whimsical ‘Wonder’

One-of-a-kind pearls take the shape of ice cream cones, frogs, submarines, and other imaginative charms.

Bracelets_1872_1052.jpg
Supplier BulletinJul 02, 2026
Elevating Retail Showcases with Today's Necklace & Bracelet Trends

Sponsored by Rio Grande Jewelry Supply

Oscar Heyman Flag Brooch
TrendsJul 02, 2026
Oscar Heyman’s Flag Brooch Celebrates America

The American jewelry house, founded by Latvian immigrants, has been creating American flag brooches since 1917.

D. Geller & Son store mural
IndependentsJul 02, 2026
D. Geller & Son Partners with KSU Art Students on Store Mural

The artwork celebrates the Atlanta jeweler’s legacy and symbolizes its commitment to supporting local artists and its community.

Hand taking jewelry out of jewelry box
Events & AwardsJul 02, 2026
Stratus Estate Buyers Offers Jewelers Turnkey Buying Events

Its team can evaluate jewelry and watches, as well as luxury handbags, artwork, and collectibles.

Hand holding a gas pump
SurveysJul 01, 2026
Consumer Confidence Ticks Up in June

Falling oil prices were a factor in the slight month-over-month improvement.

Rio Grande Millgrain Wedding band and Round Diamond Engagement Ring
CollectionsJul 01, 2026
Rio Grande Launches First Finished Bridal Collection

The new offering comprises more than 120 bridal and engagement ring styles with natural and lab-grown diamonds.

Rockefeller Center Rink Rolex Clock
WatchesJul 01, 2026
Rolex Unveils Clock at Rockefeller Center

The clock is part of the celebration for the soon-to-open Rolex headquarters on New York City’s Fifth Avenue.

Kristen Cannon
IndependentsJul 01, 2026
Kristen Cannon of Valobra Master Jewelers Dies at 49

The public relations professional is remembered for her benevolent generosity and unwavering commitment to those around her.

G Shock Pokemon watch in Pokeball
WatchesJun 30, 2026
Pokémon Fans Will Want to Catch This New G-Shock Watch

The new watch commemorates Pokémon’s 30th anniversary.

Saks Fifth Avenue door sign
MajorsJun 30, 2026
Saks Global Emerges From Bankruptcy With New Name

The luxury retailer is now called Exemplar Luxury Group.

Jade Ruzzo Lady Collection Compact Mirror Necklace
CollectionsJun 30, 2026
Jade Ruzzo’s New Collection Embodies the Art of Being a Lady

The “Lady” collection is a new take on old beauty standards with gemstone-adorned hair pins and combs, a compact mirror necklace, and more.

Blue Nile Montana sapphire jewelry
SourcingJun 30, 2026
Blue Nile Introduces Montana Sapphire Collection

The new line is included in the e-tailer’s curation of jewelry celebrating America’s 250th anniversary.

American Gem Society
GradingJun 30, 2026
AGS Opens 2026 Recertification Exam

All active members who earned their credential or designation before Dec. 1, 2025, are required to recertify.

Briony Raymond Carousel Collection Campaign Imagery
CollectionsJun 29, 2026
Briony Raymond’s New Collection Is a ‘Carousel’ of Hard Stones

The new jewelry collection uses a colorful palette of onyx, malachite, tiger’s eye, mother-of-pearl, lapis, turquoise, and coral.

Lee Michaels Fine Jewelry Ridgeland Mississippi exterior
IndependentsJun 29, 2026
Look Inside Lee Michaels’ Revamped Mississippi Flagship

Lee Michaels Fine Jewelry is celebrating 30 years in the Ridgeland, Mississippi community.

Sean Milliner
GradingJun 29, 2026
National Rarities Announces New Gemology Manager

Sean Milliner has joined the company.

GIA London Canary Wharf campus
GradingJun 29, 2026
GIA to Open New London Campus

Classes will begin in August at GIA’s new Canary Wharf location.

×

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