SourcingJul 12, 2023
CEO of Diamond Miner Lucapa Stepping DownSourcingJul 19, 2023
Lucara’s Underground Expansion at Karowe Hits a Snag
The miner said this week that the project will cost $136 million more than expected and take about a year-and-a-half longer to complete.
An aerial view of the Karowe diamond mine in Botswana. Owner Lucara Diamond Corp. is in the process of taking the mine underground and extending its life until 2040, though it reported this week that it has encountered a delay.
Vancouver, B.C.—The underground expansion at Botswana’s Karowe diamond mine will take longer than expected and cost more, owner Lucara Diamond Corp. said this week.
The company provided an update on the project Sunday, stating there is more water underground than it anticipated, which has required additional grouting. (Grouting is used in the construction, development and operation of underground mines in order to keep groundwater from leaking into the mine.)
Lucara said the additional grouting is expected to delay the start of underground production by 18 months, pushing it from the second half of 2026 to the first half of 2028.
It also will increase the project’s cost by 25 percent, from $547 million estimated in May 2022 to $683 million.
Despite the delay and added costs, Lucara’s main shareholder, The Lundin Group, said in Sunday’s update that it remains supportive of the project and bullish on the future of the mine.
“The Karowe underground mine expansion provides access to the highest-value portion of the orebody responsible for delivering numerous record-breaking diamonds in respect of size and value, including three diamonds in excess of 1,000 carats,” said Adam Lundin, a director of Lucara.
Karowe produced the 1,109-carat “Lesedi La Rona” diamond in 2015—the tennis ball-sized stone Laurence Graff bought for $53 million—and the 1,758-carat “Sewelô” diamond, among other large and notable stones.
Lundin added, “The project remains highly economic, despite the delays incurred and as Lucara’s largest shareholder, we remain fully supportive of the company.”
Related stories will be right here …
The company provided an update on the project Sunday, stating there is more water underground than it anticipated, which has required additional grouting. (Grouting is used in the construction, development and operation of underground mines in order to keep groundwater from leaking into the mine.)
Lucara said the additional grouting is expected to delay the start of underground production by 18 months, pushing it from the second half of 2026 to the first half of 2028.
It also will increase the project’s cost by 25 percent, from $547 million estimated in May 2022 to $683 million.
Despite the delay and added costs, Lucara’s main shareholder, The Lundin Group, said in Sunday’s update that it remains supportive of the project and bullish on the future of the mine.
“The Karowe underground mine expansion provides access to the highest-value portion of the orebody responsible for delivering numerous record-breaking diamonds in respect of size and value, including three diamonds in excess of 1,000 carats,” said Adam Lundin, a director of Lucara.
Karowe produced the 1,109-carat “Lesedi La Rona” diamond in 2015—the tennis ball-sized stone Laurence Graff bought for $53 million—and the 1,758-carat “Sewelô” diamond, among other large and notable stones.
Lundin added, “The project remains highly economic, despite the delays incurred and as Lucara’s largest shareholder, we remain fully supportive of the company.”
Lucara announced its intention to go underground at Karowe in 2019.
When completed, the project will keep the mine running until at least 2040, essentially doubling its lifespan.
It is expected to result in $4 billion in additional revenue using “conservative” diamond price assumptions, the miner said.
Karowe opened in 2012, and the open-pit portion of the operation is expected to be mined out by 2026.
On Sunday, Lucara said it has sufficient stockpiles of kimberlite ore from the South, Centre and North lobes to maintain the current level of feed to the mine’s processing plant for the duration of the delay.
It added that the long-term outlook for diamond prices, combined with the mine’s potential for producing exceptional stones and the continued strong performance of the open pit, could mitigate the impact the delay is expected to have on cash flow.
Editors' Picks
Sponsored by
More on Sourcing
The Latest
AuctionsAug 29, 2025
Sotheby’s UAE Sale to Feature 32-Carat Fancy Vivid Orangy Pink DiamondThe highlight of a single-owner jewelry and watch collection, it’s estimated to fetch up to $7 million at auction this December.
FinancialsAug 29, 2025
Movado’s Q2 Sales Rebound Despite Tariff ImpactCEO Efraim Grinberg noted a resurgence in the fashion watch market.
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.
Brought to you by
Rallying Call for the Jewelry Industry on Tariffs and Other Key IssuesJewelers of America is leading the charge to protect the industry amidst rising economic threats.
Supplier BulletinAug 28, 2025
Clientbook Is Helping Jewelers Turn Clienteling Challenges into Wins with Hands-On Training and CoachingSponsored by Clientbook
Weekly QuizAug 29, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
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.
MajorsAug 28, 2025
Borsheims Names New Jewelry BuyerFormer Free People buyer Afton Robertson-Kanne recently joined the retailer.
Brought to you by
Taking the Moment Head On: How Rio Grande Champions the Present & Future of Fine JewelryAs a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.
IndependentsAug 28, 2025
Sissy’s Log Cabin Donates School Supplies to Memphis StudentsThe jeweler teamed up with two local organizations for its inaugural “Back to School and Bling” event.
EditorsAug 27, 2025
Taylor Swift’s Engagement Ring Is a Fairy Tale for Vintage Diamond CutsThe singer’s new bling, reportedly a natural old mine-cut diamond, is no paper ring.
SurveysAug 27, 2025
Consumer Confidence Slips in August Amid Job, Income WorriesPlans for dining out, booking vacations, and buying big-ticket items were down.
CollectionsAug 27, 2025
Mined + Found’s New Collection Gets Playful The “Play” collection centers on nostalgic toys that have kinetic elements to carry playfulness and wonder into adulthood.
CollectionsAug 26, 2025
Does Your Jewelry Stack Need a Snack?Designer Christina Puchi, the creative force behind CCWW Designs, has created charms and pendants based on iconic candies and crackers.
WatchesAug 26, 2025
Nick Jonas Gets Nostalgic in New Fossil CampaignThe Jonas Brothers star showed off new timepieces against the backdrop of his favorite spots in his home state of New Jersey.
IndependentsAug 26, 2025
Hinkamp Jewelers Celebrates 70 YearsThe family-owned jeweler in Fayetteville, North Carolina, is in the hands of the second generation.
ColumnistsAug 26, 2025
Back to School, Back to Style: Why August is Prime Time for Self-GiftingIn his latest column, Emmanuel Raheb shares tips for encouraging customers to treat themselves to new jewelry.
WatchesAug 25, 2025
London Jewelers Brings Rolex to Historic Hamptons HomeThe new stand-alone Rolex boutique is housed in the former Odd Fellows Hall, a landmark built in 1897.
CollectionsAug 25, 2025
Tennis Star Madison Keys Has the Perfect Necklace for the US OpenThe Brilliant Earth ambassador co-designed a diamond medallion featuring meaningful symbols.
TrendsAug 25, 2025
Amanda’s Style File: That’s a WrapWrap jewelry is more than just a trend; it’s the perfect motif for the coming season of layering, scarves, and pumpkin spice.
WatchesAug 25, 2025
WatchTime NY Show Returns for 10th Anniversary EditionThe three-day watch collector show, coming this October, will feature 44 exhibiting brands, as well as a new dinner experience.
GradingAug 22, 2025
Former Head of GIA India Promoted to Oversee Global Operations Sriram “Ram” Natarajan is now GIA’s senior vice president of laboratory operations and is based out of the lab’s headquarters in Carlsbad.
CollectionsAug 22, 2025
Piece of the Week: Retrouvaí’s ‘Diamond Vein Bond’ CollarThe one-of-a-kind collar represents the beauty of imperfection and the strength to rebuild.
MajorsAug 22, 2025
Kendra Scott Returns as CEO of Her Jewelry EmpireThree C-suite executives, including former CEO Tom Nolan, have resigned as part of what the company describes as a “transition.”
MajorsAug 21, 2025
Claire’s Finds Buyer, Could Save up to 950 StoresThe retailer, which recently filed Chapter 11, inked a deal to sell its North American business and intellectual property.
MajorsAug 21, 2025
Target Names New CEO as Sales Continue to Lag Target CEO Brian Cornell will step down in February and be replaced by the company’s chief operating officer, Michael Fiddelke.
Policies & IssuesAug 21, 2025
JA, IDMA Talk Tariffs With Execs in DC The group met with the president's senior trade advisor earlier this week to express the industry’s concerns about the effects of tariffs.
MajorsAug 21, 2025
Tiffany & Co. Pops Up at 2025 US OpenThe pop-up will display this year's Tiffany & Co. Singles Championship trophies along with a diamond-encrusted tennis racket and ball.
