Sourcing

Lesotho Mine Yields 108-Carat Pink Diamond

SourcingApr 24, 2023

Lesotho Mine Yields 108-Carat Pink Diamond

Awaiting a name, the rare gem is one of the largest pink diamonds ever recovered.

20230421_108Pink-4.jpg
Storm Mountain Diamonds recovered this 108.39-carat rough pink diamond from its Kao mine in Lesotho last month, the largest pink diamond ever unearthed at the mine.
Maseru, Lesotho— Storm Mountain Diamonds recently announced the recovery of a 108.39-carat rough pink diamond from its Kao mine in the Kingdom of Lesotho.

Unearthed at the end of March and described by the company as a fancy intense pink, it is one of the largest pink diamonds ever recovered, the company said. It is substantially larger than the 47.81-carat “Pink Eternity” mined last fall, which previously held the record as the largest pink diamond unearthed at the Kao mine.

Like many other pink stones from Kao, the 108-carat diamond is a rare Type IIa stone. GIA describes Type IIa diamonds as having an “exceptionally pure chemical composition” with “negligible amounts of nitrogen or boron.”

The Lesotho Minister of Natural Resources Mohlomi Moleko said the stone is one of the most significant diamonds found to date in Lesotho.

Other notable stones recently recovered from the Kao mine include the 25.97-carat “Pink Dawn” in 2021, the 21.86-carat “Pink Palesa” in 2021, the 29.59-carat “Rose of Kao” in 2018, and the 36.06-carat “Pink Storm” in 2013.

Storm Mountain Diamonds said the new diamond has not been named, but there is a list of names submitted by the mining team in Lesotho up for selection.

20230421_108Pink-2.jpg
The Lesotho Minister of Natural Resources said this rough pink diamond is "one of the most significant diamonds found to date in Lesotho.”


Storm Mountain Diamonds has operated the Kao kimberlite diamond mine since 2010. Jointly owned by Storm Mountain Diamonds Ltd. and the Government of Lesotho, it is located in the Butha-Buthe District of Lesotho.

The kimberlite pipe is the fourth largest in southern Africa and the largest in Lesotho, which is home to a few diamond mines including Letšeng, known for its output of large diamonds.

The Kao mine sits at 2,500 meters above sea level and is one of the world’s highest gemstone operations, according to the Storm Mountain Diamonds website

Discovered by Colonel Scott and his exploration team in the 1950s, Kao showed potential as a diamondiferous mine, though the grade and value of the diamonds were initially low.

Artisanal miners and organized cooperatives mined it until 2006, when Kao Diamond Mines Ltd. acquired the mining lease from the Lesotho government. 

The company struggled with poor production, exporting only about 7,000 carats over three years, and eventually liquidated in 2009, with Storm Mountain Diamonds coming onto the scene the following year.

 Related stories will be right here … 

While the miner has yet to share when or how this newly discovered pink diamond will be sold, it’s an interesting time for the pink diamond market.

Nearly a decade ago, the 36-carat “Pink Storm” that put Kao on the map as a serious pink diamond producer sold for $15.4 million, or about $426,000 per carat.

Pink diamond sales have trended upward from there, but auction prices have fluctuated.

In 2022, the 11.15-carat internally flawless “Williamson Pink Star” set a new price-per-carat record when Sotheby’s Hong Kong sold it for $57.7 million, or $5.2 million per carat.

The following month at Christie’s Geneva, the “Fortune Pink,” an 18.18-carat fancy vivid pink, sold for considerably less, topping out at $28.8 million, or around $1.5 million per carat.

Now, many eagerly await to see the figure garnered by “The Eternal Pink,” the 10.57-carat internally flawless, fancy vivid purplish pink diamond that will headline Sotheby’s June 8 jewelry auction in New York. 

Mined in Botswana in 2019, the diamond is projected to sell for at least $35 million, or $3.3 million per carat, the highest price-per-carat estimate placed on a diamond or gemstone offered at auction, according to the auction house.

Sotheby’s described it as “arguably the most significant pink diamond to ever appear at auction.” 

The Latest

National Jeweler columnist Peter Smith
ColumnistsSep 05, 2025
Peter Smith: A Lasting Lesson From Maurice Tempelsman

Smith recalls a bit of wisdom the industry leader, who died last week, shared at a diamond conference years ago.

Jamie Turner Victoria Labradorite Necklace
CollectionsSep 05, 2025
Piece of the Week: Jamie Turner’s ‘Victoria’ Necklace

The “Victoria” necklace features a labradorite hugged by diamond accents in 18-karat yellow gold.

Stock image of the U.S. Supreme Court
Policies & IssuesSep 05, 2025
Trump Takes Tariffs Case to the Supreme Court

Two lower courts have moved to block the import taxes, which will remain in place as the legal battle continues.

japac-btyb.png
Brought to you by
Rallying Call for the Jewelry Industry on Tariffs and Other Key Issues

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

Patrick Mahomes Hublot campaign
WatchesSep 05, 2025
Patrick Mahomes Is the New Hublot Brand Ambassador

The Kansas City Chiefs quarterback shares Hublot’s dedication to pursuing greatness, the Swiss watchmaker said.

Weekly QuizSep 04, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
gia-edu main image.png
Supplier BulletinSep 04, 2025
A Brilliant Future Is Here

Sponsored by GIA

A street in Carlsbad California
Events & AwardsSep 04, 2025
27 Can’t-Miss Converge Sessions, Events

From sunrise yoga to tariffs talks, these are some events to check out at the upcoming inaugural event.

rio-article photo-diamond.jpg
Brought to you by
Taking the Moment Head On: How Rio Grande Champions the Present & Future of Fine Jewelry

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

Shot from Breitling new NFL campaign
WatchesSep 04, 2025
Breitling Takes Its NFL Game to the Next Level

Breitling is now the NFL’s official timepiece partner, a move that puts the brand in front of the millions of Americans who watch football.

NYC Jewelry, Antique, & Object Show Autumn 2025
Events & AwardsSep 04, 2025
The NYC Jewelry, Antique, & Object Show Returns in November

NYCJAOS is set for Nov. 21-23 in New York City’s Chelsea neighborhood.

Claire’s storefront
MajorsSep 03, 2025
These Are the Nearly 300 Claire’s Stores Set to Close

A new court filing details the locations of the stores that will close, as well as the 830 that will remain open.

Stuller’s Tools, Equipment, & Metals and Findings & Metals Catalogs
MajorsSep 03, 2025
Stuller Releases 2 New Catalogs

The new catalogs are “Tools, Equipment, & Metals” and “Findings & Metals.”

Effy Jewelry Multicolor Sapphire Bangle
TrendsSep 03, 2025
Amanda’s Style File: A Perfect Birthstone

Sapphire’s variety of colors make it the perfect birthstone for September.

Woman with hands crossed wearing jewelry
FinancialsSep 02, 2025
Lab-Grown Diamonds, Lower-Priced Fashion Jewelry Drive Signet Jewelers’ Q2 Sales

The retailer has raised its guidance after seeing total sales increase 3 percent in the second quarter, beating expectations.

Jean-Christophe Bédos Birks
MajorsSep 02, 2025
Birks CEO Jean-Christophe Bédos Steps Down

Niccolò Rossi di Montelera, executive chairman of the board, was appointed as interim CEO.

Harry Winston Ginza Flagship Exterior, Interior
MajorsSep 02, 2025
Harry Winston Opens Its Largest Flagship in Japan

The three-floor space also features the jeweler’s largest VIP salon in Japan and offers an exclusive diamond pendant.

All Hours: Stephanie Gottlieb Fine Jewelry x Oak and Luna Campaign Imagery
CollectionsSep 02, 2025
Stephanie Gottlieb Debuts Silver Designs in ‘All Hours’ Collab

The collection is a collaboration between Stephanie Gottlieb Fine Jewelry and Oak and Luna, focusing on understated essentials.

Sothebys The Desert Rose orangy pink diamond collectors week
AuctionsAug 29, 2025
Sotheby’s UAE Sale to Feature 32-Carat Fancy Vivid Orangy Pink Diamond

The highlight of a single-owner jewelry and watch collection, it’s estimated to fetch up to $7 million at auction this December.

Calvin Klein watch and jewelry campaign
FinancialsAug 29, 2025
Movado’s Q2 Sales Rebound Despite Tariff Impact

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

Mark Davis Bullseye Necklace
CollectionsAug 29, 2025
Piece of the Week: Mark Davis’ ‘Bullseye’ Necklace

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

Image #1_Resized.png
Supplier BulletinAug 28, 2025
Clientbook Is Helping Jewelers Turn Clienteling Challenges into Wins with Hands-On Training and Coaching

Sponsored by Clientbook

GIA’s new report for lab-grown diamonds
GradingAug 28, 2025
GIA’s New ‘Quality Assessment’ for Lab-Grown Diamonds Is Coming

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

Botswana President Duma Boko
SourcingAug 28, 2025
Botswana Declares Public Health Emergency Amid Diamond Sales Slump

President Duma Boko addressed the country’s medical supply chain crisis in a recent televised address.

Afton Robertson-Kanne Borsheims
MajorsAug 28, 2025
Borsheims Names New Jewelry Buyer

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

Sissy’s Log Cabin Back to School and Bling
IndependentsAug 28, 2025
Sissy’s Log Cabin Donates School Supplies to Memphis Students

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

Taylor Swift Engaged
EditorsAug 27, 2025
Taylor Swift’s Engagement Ring Is a Fairy Tale for Vintage Diamond Cuts

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

11,685-carat Imboo emerald
SourcingAug 27, 2025
11,685-Carat Emerald Recovered From Zambia’s Kagem Mine

Dubbed the “Imboo,” or “buffalo,” emerald, the rough gemstone is part of Gemfields’ latest emerald auction, which is taking place now.

×

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