Just last month, Lucara Diamond Corp recovered a 1,305.4-carat diamond at its Karowe mine, confirming Botswana’s extraordinary natural wealth. But falling prices, a swollen stockpile, and competition from lab-grown stones are exposing the limits of an economy still built around diamonds.
The recovery was blended from open-pit and previously stockpiled ore, so its precise origin within the mine can’t be confirmed, and industry reporting has ranked it among the largest rough stones ever found on earth.
In the same window, Anglo American was in advanced talks to sell an 85 per cent stake in De Beers, the company that has defined the global diamond trade for over a century, for roughly $1 billion, though CEO Duncan Wanblad has since said no buyer has been finalised and the company is not in exclusive talks with any single consortium.
In 2001, that stake was worth $17.6 billion, and Anglo had already written De Beers’ carrying value down to $2.3 billion by February 2026, the third consecutive annual impairment, before the $1 billion figure even surfaced.
The juxtaposition is the story. Botswana just produced a diamond of a rarity unmatched in over a decade. The company that sells its diamonds to the world is, at the same time, being sold for a fraction of what it used to be worth.
Scarcity at the mine has not translated into value at the top of the chain, and that gap is the clearest evidence yet that the diamond industry Botswana built its economy around no longer behaves the way it used to.
Botswana has spent fifty years running one of the most successful resource-dependent economies on the continent, built almost entirely on the assumption that diamonds are rare, that De Beers can manage that rarity into price stability, and that both conditions will hold indefinitely.
Neither assumption looks safe in 2026.
Diamonds have historically accounted for around 80 percent of Botswana’s export revenue and roughly a third of government income, a concentration few resource economies have matched without falling into the volatility that usually comes with it.
The country avoided that volatility for decades through fiscal discipline and the Government Investment Account, a sovereign savings buffer built during good years to absorb the bad ones.
That buffer has now been drawn down to 0.2 percent of GDP, from 2 percent at the end of the previous fiscal year, which means the shock absorber Botswana relied on through earlier diamond downturns is largely gone. Real GDP contracted 0.3 percent year-on-year in the first quarter of 2025, the fifth consecutive quarterly decline, driven by a 7.5 percent fall in the diamond sector alone.
The fiscal deficit reached an estimated 8.9 percent of GDP in 2024. Public debt is projected to hit 44.3 percent of GDP by March 2026, up from 22.5 percent just three years earlier. In September 2025, S&P Global Ratings downgraded Botswana to BBB with a negative outlook, citing the erosion of both fiscal and foreign exchange buffers.
Reserves fell from $4.5 billion in June 2024 to $3.2 billion a year later. None of these figures describe a country in crisis, but together they describe a country whose primary revenue engine has stopped generating enough cash to keep pace with its own spending commitments, just as global demand for what it sells is being redefined.
The dependence is worth measuring against the rest of the industry, because the number that actually explains why Botswana behaves differently from other diamond producers is not volume, it is value.
Russia mines roughly 37 million carats a year, more than any other country on earth and well over Botswana’s total output. The Democratic Republic of Congo and Angola also produce more carats annually than Botswana does.
But Botswana’s diamonds are overwhelmingly high-quality gemstones rather than the smaller or industrial-grade material that makes up much of Russian and Congolese output, and that quality gap is why Botswana has historically led the world in total export value even while ranking second or lower in volume.
Namibia, at the opposite extreme, produces a fraction of Botswana’s carats but earns close to five times what Russia earns per stone, because its offshore marine deposits are almost uniformly clean gem quality. Export revenue is estimated to have fallen to around $2.8 billion in 2025, down from a 2023 peak of $3.3 billion, and that decline in a country that mines by value rather than volume is a more precise way to read the pressure than a raw carat count would be.
The diamond market Botswana entered in the 1970s does not exist anymore.
What has replaced it is a permanent bifurcation between natural stones and laboratory-grown ones, and the two have stopped competing on the same terms entirely.
Lab-grown diamond prices have collapsed roughly 90 percent since 2020, from a technology that was initially marketed as a premium alternative to natural stones down to an average retail price of around $725 per carat, roughly a tenth of the $4,200 per carat that natural diamonds still command.
Lab-grown stones now account for more than 60 per cent of loose engagement ring purchases in the United States, but at a fifth of the price point natural diamonds occupy, they have effectively exited the luxury category altogether and become a mass fashion commodity, closer in market logic to costume jewellery than to the wealth-preservation asset diamonds were sold as for a century.
De Beers’ own decision to shut down Lightbox, its lab-grown brand, after its attempt to hold a flat $800-per-carat price failed to stop the collapse, is the clearest signal that even the company most invested in managing synthetic supply has concluded there is no price floor left to defend in that segment.
This is, in one sense, good news for Botswana, because it removes lab-grown diamonds as a direct substitute for the natural, large, high-clarity stones Karowe specialises in.
De Beers’ wholesale prices for natural diamonds still declined 32 percent in the first half of 2026, evidence that the natural segment is not immune to pressure even as it repositions around scarcity and provenance rather than trying to compete with synthetic stones on price.
The “House of Botswana” marketing push, and moments like Beyoncé wearing the Karowe-sourced “Queen of Kalahari” at the Met Gala, are attempts to defend that repositioning with cultural weight rather than supply control, because supply control is no longer De Beers’ to exercise the way it once was.
The 1,305.4-carat stone is the tenth diamond exceeding 1,000 carats recovered from Karowe since 2012, a strike rate no other mine on earth has come close to matching.
That consistency reflects Lucara’s Mega Diamond Recovery X-ray Transmission technology, which identifies exceptionally large stones before they reach the crushing process that would otherwise destroy them, a technical edge that has made Karowe the world’s most reliable source of record-breaking rough diamonds.
Lucara is now transitioning to the Karowe Underground Project, targeting full-scale production by early 2028 to reach higher-value ore that lies beneath the current open pit.
That transition matters because it is a multi-year capital commitment against the assumption that large, natural stones will remain valuable enough to justify the investment, a bet the rest of the industry is not uniformly making.
Debswana, the joint venture between De Beers and the Botswana government that accounts for the bulk of the country’s production, raised its 2026 output target to 18 million carats, a 20 per cent increase, on the back of improved machinery and higher ore grades at Orapa.
De Beers, meanwhile, is pausing production at its Venetia mine in South Africa for two years, starting in July 2026, to “streamline the business”. The two decisions sitting side by side, expansion in Botswana and contraction in South Africa, suggest that where De Beers is choosing to keep producing is no longer a neutral technical decision but a statement about which assets it still believes are worth running.
Karowe is the mine that produces the headlines, but it is not the mine that carries Botswana’s fiscal position.
That weight sits with Jwaneng and Orapa, the two Debswana-run mines that account for the bulk of the country’s diamond export revenue and government royalties.
Both are mature, deep operations, and continued output at current grades increasingly depends on either cutting further down into the pit, which raises the cost of every carat recovered, or transitioning underground, the same capital-intensive shift Lucara is already making at Karowe.
None of the figures behind Debswana’s raised 2026 output target come with a cost-per-carat context, which matters because a higher target achieved at a higher extraction cost is a different story from one achieved through efficiency gains alone.
It is also worth reading against Botswana’s own inventory position.
By December 2025, the country was holding about 12 million carats of diamonds that had already been mined but not yet sold, a stockpile nearly double the 6.5 million carats the government considers a manageable level, according to its own 2026/27 budget strategy paper.
The problem is bigger than storage space: unsold diamonds tie up cash, limit room for new production, and delay the export revenue the state depends on, which is the finance ministry’s own way of saying that more production is not, by itself, the constraint the economy is short on right now.
There is also a physical constraint that rarely makes it into financial coverage of the sector. Diamond processing is water-intensive, and Botswana’s major mines sit in one of the most water-scarce regions on the continent, which means expansion targets and underground transitions carry environmental exposure that a purely revenue-focused account of the industry will miss.
The proposed De Beers sale, if it closes on the terms currently being discussed, would reshape who actually keeps the earnings from Botswana’s diamonds going forward.
The Global Diamond Consortium, reportedly in talks to acquire Anglo American’s 85 percent stake, is led by former De Beers chief executive Gareth Penny, and includes the governments of Namibia and Angola alongside established trading houses such as Diarough, Pluczenik and Rosy Blue.
Botswana currently holds the remaining 15 per cent of De Beers and has stated a desire to increase that share. A consortium anchored by two other diamond-producing governments, rather than a single London-headquartered mining major, changes the negotiating dynamic considerably.
Namibia and Angola sitting inside the new ownership structure gives them a seat at the table when pricing, marketing and beneficiation policy are set, which is a different relationship than the one Botswana has managed with Anglo American for decades.
Whether that becomes an opportunity for Botswana to negotiate a larger stake at a moment when the asset is being valued at a steep discount to its historical worth, or a dilution of the leverage it built as the largest single producer within the De Beers system, will depend on terms that are still being negotiated and are not yet public.
Angola’s presence in the consortium raises a governance question of its own.
The Kimberley Process, the industry’s decades-old certification scheme for excluding conflict diamonds, has been repeatedly criticised for defining conflict too narrowly to capture the full range of provenance and governance concerns that have shadowed Angola’s diamond sector in the past.
A government with that history taking an ownership stake in the company that markets diamonds for the entire industry, including Botswana’s, is not disqualifying on its own, but it is a detail that belongs in any assessment of what the new ownership structure means for the natural-diamond provenance story Botswana is relying on to defend its luxury positioning.
Botswana’s response to all of this is not new in direction, only in urgency.
The Botswana Economic Transformation Programme is accelerating two tracks simultaneously. The first is downstream beneficiation, enforcing local cutting, polishing and trading requirements through the House of Botswana initiative and revised agreements with De Beers, an attempt to keep more of the earnings per carat inside the country rather than exporting rough stones and importing back the margin that cutting and polishing generate elsewhere.
The second is diversification away from diamonds altogether, into the Kalahari Copper Belt and manganese deposits, alongside efforts to build out the beef sector’s industrial leather chain, green energy capacity to reduce reliance on coal, and Gaborone’s positioning as a regional fintech and logistics hub.
Both tracks require capital and time., which Botswana’s current fiscal position makes it harder to find, which is the tension sitting underneath the diversification story. The country is trying to build new revenue lines just as its existing one has stopped generating the fiscal surplus that would normally fund that kind of transition.
Botswana is not the only producer running this playbook, and the comparisons are instructive rather than flattering. Namibia pursues the same value-capture logic offshore, through Debmarine, a joint venture with De Beers structurally similar to Debswana, which recovers marine diamonds using specialised vessels and avoids the land-based ore depletion problem entirely.
South Africa took a more forceful legislative route, mandating local beneficiation by law through its 2007 Precious Metals Act rather than negotiating it mine by mine, though with mixed results on how many of the resulting cutting and polishing operations have actually stayed profitable.
Botswana’s own beneficiation push already has a track record worth citing rather than assuming: its cutting and polishing sector employed close to 3,000 people and generated close to $800 million in revenue in the early 2010s, built around the Diamond Technology Park outside Gaborone. That is the baseline the current push needs to beat, and it is a more concrete measure of beneficiation’s real economic return than the policy language around it usually offers.
The clearest risk is that the “soft recovery” language now attached to the natural diamond segment describes a price stabilisation for large, exceptional stones like the ones Karowe produces, without extending to the broader run of diamonds that make up the bulk of Botswana’s actual export volume.
A recovery concentrated in the top 1 percent of stones by size and quality does not repair a fiscal position built on volume.
A second risk is timing.
The Karowe Underground Project’s 2028 target and the BETP’s diversification goals will both take years to pay off, while the fiscal buffers that would normally absorb a rough transition period have already been drawn down close to zero.
A third is that the De Beers sale, whatever its outcome, changes a governance structure Botswana has operated inside for over fifty years, introducing new shareholders whose interests will not automatically align with Gaborone’s on questions of where cutting and polishing happens, how marketing budgets are allocated, and how aggressively the natural-diamond scarcity narrative is defended against further lab-grown price erosion.
The Sable Take
Botswana’s diamond industry, and the Karowe discovery, is evidence that its most valuable asset, exceptionally large and rare natural stones, remains in strong demand. But the industry that produces those stones is being reorganised around it in ways Botswana does not fully control.
Ownership of the company that markets its diamonds is changing hands at a valuation collapse that has nothing to do with the quality of Botswana’s ore and everything to do with how the global market has repriced the entire category since lab-grown alternatives entered it.
Botswana’s future will not be secured by finding one more exceptional diamond. It will depend on whether the country can turn its remaining diamond wealth into industries that can survive when the stones run out or when the market no longer pays what it once did.