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

Jewelry from NYC Jewelry Week 2024
Events & AwardsNov 18, 2025
NYC Jewelry Week 2025: 12 Must-See Events

With more than 140 activations taking place in New York City now through Nov. 23, these 12 events are can’t-miss moments.

Lugano Diamonds Greenwich Connecticut store
MajorsNov 18, 2025
Lugano Diamonds Files for Bankruptcy, Looking for Buyer

The Chapter 11 filing follows the resignation of CEO Moti Ferder, who stepped down after an investigation into the company’s finances.

Kathleen Ryan Dreamhouse Bad Fruit sculpture
Events & AwardsNov 18, 2025
A Giant, Bejeweled Moldy Berry Is on Display in LA

The artwork is part of an exhibition featuring works by Kathleen Ryan, an artist known for her gemstone-studded rotting fruit sculptures.

Recipients Collage 2025 - NJ (1872 x 1050 px) (1872 x 1052 px).png
Brought to you by
Impacting Tomorrow Today

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

Suspects in murder of father and son jewelers in Chicago
CrimeNov 17, 2025
Police Searching for 2 Suspects in Murder of Father, Son Jewelers

Faustino Alamo Dominguez and his son, 25-year-old Luis Angel Alamo, were gunned down following an armed robbery at their jewelry store.

Weekly QuizNov 13, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Jeffrey Bennett
GradingNov 17, 2025
IGI Announces New President of North America

Tiffany & Co. veteran Jeffrey Bennett has stepped into the role.

Robbins Brothers Pasadena store exterior
MajorsNov 17, 2025
Look Inside Robbins Brothers Fine Jewelers’ New Pasadena Flagship

The showroom is located in a historic 1920s building in the Playhouse District.

roseco-catalog.png
Brought to you by
Roseco Releases New Full-Line Catalog

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

Rolex Perpetual 1908 watch with 18-karat yellow gold bracelet
Policies & IssuesNov 14, 2025
U.S., Switzerland Reach Deal That Drops Tariff to 15%

The Swiss government announced the deal, which cuts the tax on Swiss imports by more than half, on social media Friday morning.

Napoleon Bonaparte diamond brooch
AuctionsNov 14, 2025
Napoleon’s Diamond Brooch Blows Away Auction Estimates

A buyer paid $4.4 million for the piece, which Napoleon wore on his hat for special occasions and left behind when he fled Waterloo.

Buccellati Étoilée earrings
FinancialsNov 14, 2025
Richemont’s Q2 Jewelry Sales Up 12%

Plus, how tariffs and the rising price of gold are affecting its watch and jewelry brands.

Silvia Furmanovich x Mellerio Butterflies in Flight Jewelry Box
CollectionsNov 14, 2025
Piece of the Week: Silvia Furmanovich’s ‘Butterflies in Flight’ Jewelry Box

Furmanovich designed the box to hold Mellerio’s “Color Queen,” a high jewelry collection consisting of 10 rings.

JCK Las Vegas trade show
Events & AwardsNov 14, 2025
JCK Names New Event Director

Jennifer Hopf, who has been with JCK since 2022, will lead the execution of the long-running jewelry trade show.

Adler’s Jewelry storefronts New Orleans
IndependentsNov 13, 2025
127-Year-Old New Orleans Jeweler to Close

Adler’s Jewelry is set to close its two stores as 82-year-old owner Coleman E. Adler II retires.

Green Lake Jewelry Works Seattle interior
IndependentsNov 13, 2025
Green Lake Jewelry Works to Move to New Seattle Studio

Founder Jim Tuttle shared how a dedication to craftsmanship and meaningful custom jewelry fueled the retailer’s double-digit growth.

Leon V. Der Calousdian
MajorsNov 13, 2025
Vahan Jewelry Founder Leon ‘Sacha’ Der Calousdian Dies at 85

The third-generation jeweler is remembered as a passionate creative with a love of art, traveling and sailboat racing.

Father-son jewelers Faustino Alamo Dominguez and Luis Angel Alamo
CrimeNov 12, 2025
Father, Son Jewelers in Chicago Victims in Double Homicide

JSA and Cook County Crime Stoppers are both offering rewards for information leading to the arrest of the suspect or suspects involved.

Mellon Blue Diamond Christies
AuctionsNov 12, 2025
‘Mellon Blue’ Diamond Sells for $7M Less Than It Did a Decade Ago

A buyer paid $25.6 million for the diamond at Christie’s on Tuesday. In 2014, Sotheby’s sold the same stone for $32.6 million.

Mercedes Gleitze Companion Oyster
AuctionsNov 12, 2025
Historic Rolex Oyster Fetches $1.7M at Sotheby’s

Mercedes Gleitze famously wore the watch in her 1927 swim across the English Channel, a pivotal credibility moment for the watchmaker.

Gemological Institute of America logo
GradingNov 12, 2025
It’s Time: GIA’s Express Holiday Service Is Back

GIA is offering next-day services for natural, colorless diamonds submitted to its labs in New York and Carlsbad.

Tiffany & Co. Love Is a Gift Campaign and David Yurman The Joy of Extraordinary Memories campaign
MajorsNov 10, 2025
Jewelers Focus on Love, Joy In 2025 Holiday Campaigns

Tiffany & Co., David Yurman, and Pandora have launched holiday campaigns depicting their jewelry as symbols of affection and happiness.

Hand holding holiday shopping bags
SurveysNov 10, 2025
5 Things Retailers Should Know About Holiday Shoppers This Year

The National Retail Federation is bullish on the holidays, forecasting retail sales to exceed $1 trillion this year.

The Rainbow Collection Christies
AuctionsNov 10, 2025
300+ Colored Diamonds Up for Auction at Christie’s

Late collector Eddy Elzas assembled “The Rainbow Collection,” which is offered as a single lot and estimated to fetch up to $3 million.

 Sapphire tennis necklace
EditorsNov 07, 2025
Piece of the Week: An MVP’s Sapphire Tennis Necklace

At the 2025 World Series, the Los Angeles Dodgers’ Yoshinobu Yamamoto sported a custom necklace made by California retailer Happy Jewelers.

Foundrae Palm Beach Location Exterior and Founder Beth Hutchens
IndependentsNov 07, 2025
Foundrae’s New Palm Beach Location Is a ‘Golden Solarium’

The brand’s seventh location combines Foundrae’s symbolic vocabulary with motifs from Florida’s natural surroundings.

Watches of Switzerland Mall of America store
FinancialsNov 07, 2025
Watches of Switzerland’s H1 Sales Up 8%

The retailer also shared an update on the impact of tariffs on watch customers.

G. St x Jewel Boxing Raffle for City Harvest Graphic
IndependentsNov 06, 2025
Greenwich St. Jewelers Hosts Raffle Supporting Food Rescue

All proceeds from the G. St x Jewel Boxing raffle will go to City Harvest, which works to end hunger in New York City.

×

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