Wiley said the project will give scientists worldwide access to the American Museum of Natural’s History renowned mineral collection.
157-Carat Diamond Recovered from Gahcho Kué Mine
The discovery marks the largest diamond found by Mountain Province Diamonds.

Toronto—Mountain Province Diamonds Inc announced its biggest diamond find to date from the Gahcho Kué mine located in Canada’s Northwest Territories.
The miner recovered a 157.4-carat diamond of “exceptional quality.”
"The recovery of the largest ever diamond and the successful bid was certainly a boost to the morale of the company,” said CEO Stuart Brown.
“It shows that the mine, although a high-volume producer of predominantly smaller diamonds, does produce diamonds of exceptional size and quality."
The biggest diamond ever found in Canada, a 552.74-carat yellow CanadaMark diamond, was also recovered in the Northwest Territories in October 2018 at Dominion Diamond Mines’ Diavik mine.
Looking to the fourth quarter overall, Mountain Province Diamonds sold 956,348 carats for $80.2 million Canadian dollars ($61.7 million) for an average value of $83.82 Canadian dollars per carat ($64.53).
The company said it saw continued price recovery throughout the quarter with most sales categories finishing above pre-COVID-19 values.
The results are “very encouraging,” said Brown, noting the challenges faced by the diamond industry amid the pandemic.
"Rough diamond prices, in the larger and better-qualities have been exceptional and pleasingly we saw further improvement in the smaller and lower quality diamonds which we believe will continue to strengthen in 2021,” said Brown.
The Gahcho Kué Mine is a joint venture between De Beers Canada Inc. (51 percent) and Mountain Province Diamonds (49 percent).
The Latest

The “Flower Puff” collection looks to beaded flower friendship bracelets from childhood, turning the silhouette into nostalgic fine jewelry.

Set for April 2, the webinar will discuss how the jewelry industry can address the workforce gap.

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

Bayer, founder of Lisa Bayer Designs, is remembered as “a bright light in every room.”


The highest-grossing lot was a Tiffany & Co. ring set with a flawless, emerald-cut diamond of 10 carats.

Former Sotheby’s executive Tom Heap has taken on the London-based role.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

The group of women allegedly robbed two Catbird stores and one Gorjana location on the afternoon of March 9.

Movado CEO Efraim Grinberg noted continued strength in the fashion watch and accessible luxury segments in the U.S.

After celebrating 25 years in 2025, the campaign marks a new chapter for the jewelry brand with the message that “Identity Creates Value.”

Couture and Time to Watches announced the watch brands, from big names to independents, attendees will see at the show.

Plus, why Saks Global’s bankruptcy may have given Bloomingdale’s an edge.

The flawless, Type IIa stone is estimated to achieve up to $2.8 million at the auction house’s high jewelry sale in April.

Costume designer Kate Hawley wore three archival Tiffany & Co. brooches, our Pieces of the Week, while accepting her first Oscar.

The jewelry retailer announced changes to its store network and brand portfolio during its fourth-quarter earnings call.

From a weaker labor market to inflation, NRF Chief Economist Mark Mathews gave insight on what retailers can expect this year.

The 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.

Three-time Grammy award-winning artist Nelly is set to perform at the annual event at Tao Beach in Las Vegas on May 31.

The model and fashion editor’s gold evening bags were the top lots at the London sale, going for more than $25,000 each.

Fresh off winning the David Yurman Gem Awards Grant, Nelson discusses the ring that launched his career and his plans for the future.

The “stunning” Type IIb stone was found via x-ray technology at its Karowe mine in Botswana.

“The Basics of Jewelry” has been updated to include modern topics and visuals.

Held just before the Oscars, the jewelry industry’s big awards show had its share of standout jewelry, gowns, and acceptance speeches.

The Brazilian mine’s new collection features cabochons in soft, muted shades like silver and lilac.

The Academy Award-winning actress stars in Tiffany & Co.’s latest commercial, which debuted Sunday night during the Oscars.

The organizational change follows Kering’s promise of a transformation after declining sales in 2025.





















