The highlight of a single-owner jewelry and watch collection, it’s estimated to fetch up to $7 million at auction this December.
De Beers’ New Mine Moves into Production Phase
The diamond mine is called Gahcho Kué, and it’s located in Canada’s Northwest Territories.

Toronto--Gahcho Kué, the largest new diamond mine under construction anywhere in the world, has moved into the production phase and is expected to be fully operational early next year, De Beers said.
Pronounced Ga-cho Kway, the open-pit mine is located in Canada’s Northwest Territories, about 280 km (174 miles) northeast of the capital, Yellowknife. It is owned by De Beers (51 percent) and Mountain Province Diamond (49 percent), a Toronto-based mining company.
De Beers announced last week that the new mine’s process plant has been commissioned and ore from the mine now is being fed into it, signaling the formal ramp-up of diamond production.
Gahcho Kué is expected to produce an average of 4.5 million carats per year over the course of its life, which is expected to be 13 years.
The Canadian government approved development of the diamond mine in 2013.
To date, more than 20 million tons of waste has been pre-stripped at the site in order to expose the ore.
The first ore was exposed in March and introduced into the processing facility in June, with the first commissioning carats recovered on June 30.
De Beers Canada also has the Victor Mine in northern Ontario and Snap Lake in the Northwest Territories, though it has halted production of the latter and will flood it this fall, unless another diamond mining company steps forward to buy it.
Canada is the third largest diamond-producing country in the world by value.
Editor’s note: This story was updated post-publication to reflect the fact that the life of the Gahcho Kué mine is now expected to be 13 years, up slightly from 11.
The Latest

CEO Efraim Grinberg noted a resurgence in the fashion watch market.

The “Bullseye” necklace, with vintage bakelite and peridot, August’s birthstone, is the perfect transitional piece as summer turns to fall.

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

Sponsored by Clientbook


It will classify lab-grown stones into one of two categories, “premium” or “standard,” in lieu of giving specific color and clarity grades.

Former Free People buyer Afton Robertson-Kanne recently joined the retailer.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

The jeweler teamed up with two local organizations for its inaugural “Back to School and Bling” event.

The singer’s new bling, reportedly a natural old mine-cut diamond, is no paper ring.

Plans for dining out, booking vacations, and buying big-ticket items were down.

The “Play” collection centers on nostalgic toys that have kinetic elements to carry playfulness and wonder into adulthood.

Designer Christina Puchi, the creative force behind CCWW Designs, has created charms and pendants based on iconic candies and crackers.

The Jonas Brothers star showed off new timepieces against the backdrop of his favorite spots in his home state of New Jersey.

The family-owned jeweler in Fayetteville, North Carolina, is in the hands of the second generation.

In his latest column, Emmanuel Raheb shares tips for encouraging customers to treat themselves to new jewelry.

The new stand-alone Rolex boutique is housed in the former Odd Fellows Hall, a landmark built in 1897.

The Brilliant Earth ambassador co-designed a diamond medallion featuring meaningful symbols.

Wrap jewelry is more than just a trend; it’s the perfect motif for the coming season of layering, scarves, and pumpkin spice.

The three-day watch collector show, coming this October, will feature 44 exhibiting brands, as well as a new dinner experience.

Sriram “Ram” Natarajan is now GIA’s senior vice president of laboratory operations and is based out of the lab’s headquarters in Carlsbad.

The one-of-a-kind collar represents the beauty of imperfection and the strength to rebuild.

Three C-suite executives, including former CEO Tom Nolan, have resigned as part of what the company describes as a “transition.”

The retailer, which recently filed Chapter 11, inked a deal to sell its North American business and intellectual property.

Target CEO Brian Cornell will step down in February and be replaced by the company’s chief operating officer, Michael Fiddelke.

The group met with the president's senior trade advisor earlier this week to express the industry’s concerns about the effects of tariffs.

The pop-up will display this year's Tiffany & Co. Singles Championship trophies along with a diamond-encrusted tennis racket and ball.