Brazil's October 4 election and new critical minerals law shape the country's path to rare earth refining, but major capacity remains years away.
Company Profile
Carester
Overview
About Carester
Carester SAS is a privately held French rare-earth processing and engineering company headquartered in Lyon, France, founded in 2019 by chemical engineer Frederic Carencotte. Carester says its team brings more than 250 years of combined industrial experience drawn from Rhone-Poulenc, Rhodia and Solvay operations in France and China. Carester specializes in rare-earth separation, refining and recycling technology and consulting. Its flagship venture is its subsidiary Caremag, which is building a 216 million euro recycling and refining plant in Lacq, southern France, financed with French government and Japanese (JOGMEC and Iwatani) backing; Carester said in March 2025 that start-up was planned for late 2026. Carester focuses on producing heavy rare earths such as dysprosium and terbium plus neodymium and praseodymium from recycled magnets and mined concentrates. In March 2024 Carester and Solvay signed a memorandum of understanding for a strategic partnership. On July 22, 2026, InfraVia CMF Invest and USA Rare Earth signed a Share Purchase and Investment Agreement for minority stakes in Carester, under which USA Rare Earth would hold about 13.6% and Solvay’s Rhodia Opérations would exit Carester’s capital; USA Rare Earth’s filings still describe the deal as pending.
Investor Snapshot
Operations & Materials
Corporate Structure
REEx Intelligence
Recent Articles
USA Rare Earth's $2.8B bid for Serra Verde raises critical questions about who controls rare earth industrial value as Brazil tightens strategic mineral
Western rare earth capital is moving downstream, but Dy/Tb separation, metallization, and qualified magnets remain critical bottlenecks ahead of January
Heavy rare earth geology is expanding beyond southern China, but separation capacity remains the critical bottleneck. Here's where the new frontiers stand.
Lindian Resources nears first monazite concentrate at Kangankunde with A$108M cash and a A$1.1B valuation—can execution justify the price?
Sprott's ex-China rare earth ETF (REXC) offers investors exposure, but ETF screens miss supply-chain dependencies, time-to-scale gaps, and private assets
Caremag's €216M French HREE refinery raises a critical question: where do uranium, thorium, and decay products go? REEx breaks down the radionuclide
REEx introduces the Transition Vulnerability Window framework, ranking rare earth equities by time-to-qualified-molecule as Western supply gaps widen
Neo Performance Materials ships sintered magnets from Estonia, but investors must ask how much of the supply chain is truly ex-China before assigning a
With 111 days to DFARS 2027 restrictions, REEx maps which rare-earth equities hold operating proof versus unfinished execution risk across the full supply
China's magnet giants posted 30–50% profit gains in H1 2026 while U.S. firms like Niron and MP Materials race to build capacity with government-backed
DFARS expands rare-earth magnet restrictions to mining and midstream on Jan 1, 2027, but U.S. mine-to-magnet supply chains aren't ready. Here's what's at stake.
Mining more rare earths isn't enough. China controls 87–91% of processing. See which Western separators are real and when independence is achievable.
REEx weekly tracker shows incremental ex-China progress as USA Rare Earth merges with Serra Verde, while China export disruptions highlight ongoing
REEx maps how capital should migrate across the rare-earth supply chain—from exploration to magnets—and which bottlenecks actually determine who wins.
Lindian Resources signs a 70% SEGH carbonate offtake with Carester, linking African monazite and Kazakhstan heavy rare earth feedstocks to European separation.
USAR shareholders approved 126.85M new shares for Serra Verde, but REEx warns $4.7B equity faces steep execution risk across mining, separation, and magnets.
USA Rare Earth targets 2027 defense demand, but four execution gates—feedstock, separation, metallization, and magnets—must all succeed before the bullish
USA Rare Earth plans a 6,400-tonne NdFeB magnet factory in Blacksburg, SC by 2028, but execution risks across its ambitious supply chain remain significant.
Cyclic Materials raises $75M to scale U.S. rare earth recycling, targeting 2,000 tonnes of magnet material annually at its new South Carolina campus.
The U.S. produced only ~300 tonnes of NdFeB magnets in 2025 against 48,000 tonnes of demand. REEx projects 10% global share won't arrive until 2031–33.
USA Rare Earth surged 9% on geopolitical hype, but with $5.8M revenue and a $46.3M operating loss, its $4.5B valuation is hard to defend.
Southern Alliance Mining met with Malaysia's JMG to advance heavy rare earth development, as global powers compete for access to dysprosium and terbium
REEx analyzes MP Materials, Lynas, USA Rare Earth, Energy Fuels, and Neo to show where security premiums end and speculation begins in 2026.
REEx Structural Momentum Score holds at 5.4/10 as policy moves faster than qualified dysprosium, terbium, and yttrium supply can follow.
Brazilian Rare Earths unveils a $7.9B NPV scoping study for Rocha da Rocha, potentially one of the West's most critical heavy rare earth upstream assets.
Atlantic Council backs allied rare earth supply networks over national champions, as Europe quietly builds resilience through France, Estonia, and Japan
USA Rare Earth posts $5.8M Q2 revenue but trades at 644× sales with a $4.7B valuation, raising serious questions about execution risk and investor margin
Carester, a French rare-earth separation company, may be the West's most critical link in the mine-to-magnet chain, backed by €216M and key global partners.
The U.S. remains 100% import-reliant on heavy rare earths despite $700M in 2025 funding. Financing is not production—America's industrial clock is running out.
The U.S. is financing a rare earth supply chain faster than it can build one—REEx forecasts meaningful mine-to-magnet scale by 2029–2030, not 2027.
Malaysia may ease its rare earth export ban, but only if foreign investors bring technology transfer and downstream processing commitments to build
Rare earth purity alone doesn't guarantee performance. Crystal structure, grain morphology, and process history define true commercial value in advanced
A new INL-Wyonics study finds ionic liquids could rival conventional rare earth separation—but it's a model, not a commercial breakthrough. Investors
REEx challenges Motley Fool's stock picks, arguing MP Materials and USA Rare Earth investors underestimate the brutal execution complexity of
China's rare earth price index holds near multi-year highs at 269.2, but daily moves obscure a deeper structural supply crisis threatening Western industries.
In H1 2026, major traders like Traxys, Mercuria, and Sojitz reshaped rare earth supply chains through offtakes, reserves, and state-backed deals amid
Congress introduces H.R. 9858, the Critical Minerals Innovation Partnership Act, expanding U.S. strategy beyond mining to allied supply chains and
China controls 98% of heavy rare earth separation, creating a critical bottleneck for dysprosium and terbium supply before key 2026–2027 regulatory deadlines.
The West is racing to build a mine-to-magnet supply chain, but most major ex-China projects won't reach commercial scale until 2028–2030—after key
USA Rare Earth acquires a 13.6% stake in France's Carester, building a transatlantic rare earth supply chain linking mining, separation, alloys, and magnets.
Brazilian Rare Earths expands its Monte Alto District with a 9km corridor and exceptional HREE results, but investors await resource estimates and a
USA Rare Earth is building a full mine-to-magnet supply chain outside China, but commercial execution and magnet qualification now define its success.
Malaysia emerges as the top non-China rare earth processing hub as REEx's Structural Momentum Index rises to 6.1, signaling incremental Western progress
The U.S. DFC expands to $205B to compete with China's critical mineral dominance, with Malaysia emerging as a key midstream hub for rare earth processing.
Malaysia is emerging as a global rare earth battleground as nations compete to control processing, refining, and magnet supply chains on Malaysian soil.
The U.S. has less than 10% genuine rare earth resilience today. REEx forecasts 40% independence only by 2033–2035 as China retains overwhelming supply
ICHS 2026 in Belgium spotlights rare earth separation and refining—the true chokepoint in critical mineral supply chains that China dominates at 85–90%.
Processing and magnet manufacturing—not geology—are the true bottlenecks in rare earth supply chain security, as MP, Lynas, Neo, and Energy Fuels lead
Phoenix Tailings' $500M federal commitment for its Freedom Facility signals real rare earth progress, but separation tech and feedstock supply remain key
China controls 90% of rare earth separation capacity, making chemical processing—not mining—the true strategic chokepoint in global supply chains.
China's 80% rare earth export cut to Japan reveals that 15 years of diversification still hasn't replaced Beijing's dominance in processing and magnets.
Malaysia holds 16.1M metric tonnes of rare earth resources, but fragmented federal-state governance may prevent the country from capitalizing on its
China's 90%+ grip on rare earth refining and magnets has become a national security crisis, with April 2025 export controls still disrupting global supply
Energy Fuels trades at a premium, but is it justified? Explore why White Mesa Mill and rare earth processing make UUUU more than just a mining stock.
USA Rare Earth's Serra Verde acquisition offers strategic feedstock and cash flow, but faces steep production ramp-up, environmental risks, and midstream
USA Rare Earth's €175M France investment signals a shift from mining to midstream dominance as allied nations build an ex-China rare earth coalition.
Malaysia and Japan's JOGMEC are exploring 1,400 hectares in Kelantan for rare earths, potentially anchoring an ex-China heavy rare earth supply chain with
Ex-China rare earth supply chain progress updated: processing, magnets, and HREE remain key bottlenecks despite mining advances.
ADL Mineração exports Brazil's first private monazite concentrate, signaling strategic shift toward domestic rare earth processing capability.
The dysprosium and terbium bottleneck threatens Western supply chains as China controls 98-99% of heavy rare earth refining capacity through 2026.
Brazil Germany critical minerals agreement targets rare earth processing—but execution gaps remain. Chemistry and plants still missing.
Hancock Prospecting's $3B+ rare earth strategy spans Lynas, MP Materials, and Arafura—but lacks critical HREE and processing control.
Why rare earth separation—not mining—is the West's critical bottleneck. China controls 90% of refining. Western capacity won't scale until 2030+.
Australia rare earth separation lacks industrial-scale solvent extraction capacity, turning Tronox's $600M bet into speculative theater without real markets.
Western NdFeB magnet production faces execution challenges beyond capital—skilled workforce, process expertise, and sustained demand commitment determine succe…
China dominates dual-use rare earth materials processing and magnets, controlling the path from lab innovation to deployment despite Western R&D.
U.S.-EU critical minerals supply chain deal targets China dependence, but Europe outpaces America in execution. Policy alignment isn't enough.
Europe and Japan are building integrated rare earth supply chains with clear midstream focus while U.S. funding may not translate to delivery.
China dominates rare earth magnets innovation through patents, processing tech, and defense applications—while the West struggles to catch up.
USTR Greer calls U.S.-China rare earth trade stable ahead of Trump-Xi summit. America's 80% import reliance forces pragmatic diplomacy.
USA Rare Earth's Carester investment hedges midstream risk. Rare earth separation, not mining, determines supply chain success.
Japan-France-Malaysia triangle targets heavy rare earth midstream to break China's 90% processing dominance. Caremag starts late 2026.
Brazil seeks European partnerships for critical minerals development, pushing technology transfer over raw exports to build domestic supply chains.
DFARS 252.225-7052 expands Jan 1, 2027 to ban China-sourced magnets from mining through production—wartime ops expose defense supply risk.
Lanthanide nanoparticles revolutionize medical imaging and cancer treatment, but geopolitical rare earth supply chains may delay clinical applications.
Brazil rare earth refining capacity, not reserves, determines supply chain power. China controls separation infrastructure critical for U.S. independence.
EU critical raw materials strategy accelerates with new laws, domestic projects, and partnerships to avoid rare earth dependency on China.
Brazilian Rare Earths' Monte Alto discovery shows 35.3% TREO grades and heavy rare earths, but remains early-stage pending resource validation.
Ex-China rare earth supply chain builds momentum as NdPr prices hold above $110/kg, validating policy-backed revenue floors amid pricing sovereignty gaps.
European Resources' Korsnäs rare earth project shows 45-76% TREO upgrades via gravity separation, advancing Finland's strategic REE supply potential.
Trump's critical minerals coalition faces credibility issues despite sound strategy. Heavy rare earth refining remains China-dominated.
Finland invests €65M in Sokli deposit mining feasibility study. Phosphate concentrate production 2027–2029; rare earths evaluated later.
Brazil holds the world's second-largest rare earth reserves but lacks industrial strategy and processing capacity to compete globally.
Project Vault critical minerals stockpile sparks rally in rare earth stocks, but investors must look beyond policy hype to supply-chain fundamentals.
Allied governments invested over $3B in critical minerals supply chain projects in 2025, yet still fall short of China's dominance in rare earths.
SOLVOMET leads Europe's rare earth separation through advanced solvent extraction technology, bridging academic research and industrial deployment.
Brazil rare earth cooperation with US aims to counter China's dominance, but processing capacity—not reserves—remains the critical bottleneck.
Actinide separation from lanthanides is the hidden bottleneck in rare earth refining. Why China's 91% dominance in separation matters for global supply.
2026 rare earth supply chain update: MP Materials, Lynas, & Western producers advance magnet manufacturing amid government backing & strategic shifts.
2025 marked the shift from aspiration to action in building ex-China rare earth supply chains—mines secured funding, refineries broke ground, magnets shipped.
Brazilian Rare Earths ASX BRE: A$25.5M director sale coincides with major escrow release & substantial holder exits—liquidity event, not distress.
REE-FLEX pilot project unites European rare earth separation expertise to develop next-gen solvent extraction technology, challenging China's refining dominanc…
Can Brazil leverage its rare earth reserves to reshape global supply chains? Mineral abundance doesn't equal strategic power without processing capacity.
The rare earth supply chain bottleneck isn't mining—it's processing and magnet recycling. Why China's refining dominance remains the real constraint.
South Korea maintains 80% reliance on Chinese rare earths while Japan diversified. China's export controls threaten Korean EVs & tech sectors.
Weekly rare earth stock performance: MP Materials gains 7%, USAR surges 25% on supply deal, sector up 83% YTD despite 3% pullback.
EU unveils economic security doctrine to reduce rare earth dependence on China, accelerating trade defenses & supply chain diversification for investors.
UK's finance-driven Vision 2035 vs EU's stockpile strategy: two opposing bets to escape China's 90% rare earth refining chokepoint. Neither may win.
Missouri's Caldera mine could supply critical heavy rare earths for U.S. defense by 2028, breaking China's 91% control of dysprosium and terbium.
Ex-China rare earth supply chain builds toward 2026-2028, led by MP Materials & Lynas, but glut risks loom amid China's dominance.
GM and REEx agree on scaling rare earth supply chains, but diverge on critical sequencing: magnet-first buildout and heavy rare earth elements like Dy/Tb.
G7 pledges $6.4B for critical minerals but China controls 85% of refining. Analysis reveals why Beijing's rare earth dominance will persist.
Brazilian rare earth investments surge 49% by 2029, signaling Latin America's push into strategic minerals—but can Brazil build a complete supply chain?
US-Brazil negotiations on tariffs mask the real story: Washington seeks alternative rare earth sources as China tightens controls. Brazil emerges as strategic…
Global rare earth supply chain realigns with strategic investments, new partnerships, and government support to reduce dependence on China's mineral dominance.
China's rare earth export controls pose strategic challenges for U.S. industrial policy and global technology supply chains, demanding urgent investment and in…
Brazilian Rare Earths and Carester forge strategic 10-year partnership to reshape global rare earth supply chain and challenge China's market dominance.
Explore how global powers are reshaping the critical minerals supply chain, breaking China's dominance through strategic partnerships and innovative financing.
France's Caremag aims to produce 600 tons of rare earth metals annually, challenging China's market dominance and advancing European industrial sovereignty.
France's Caremag facility aims to break China's rare earth monopoly, investing $245M in processing and recycling to diversify global critical minerals supply.
The West's strategic roadmap to break China's 90% dominance in rare earth magnets, targeting 50% independent production by 2040 through industrial policy and i…
Carester is a pioneering rare earth processing company in Lyon, developing innovative recycling technologies and establishing Europe's first advanced rare eart…
Explore how the West is challenging China's rare earth separation monopoly, building critical infrastructure to secure strategic supply chains for advanced tec…
REEx reveals only Lynas and MP Materials currently produce magnet-grade rare earth oxides outside China, highlighting critical global supply chain challenges.
Discover the hidden world of rare earth traders who navigate complex global supply chains, connecting mines to manufacturers and reshaping critical mineral mar…
Exploring the complex challenges of rare earth separation, from technical barriers to expertise gaps that prevent Western nations from challenging China's proc…
Discover how solvent extraction remains the gold standard for rare earth element separation, with digital tools and AI promising to revolutionize industrial ef…
China's export controls on heavy rare earths expose critical vulnerabilities in Western defense supply chains, sparking urgent efforts to develop alternative H…
Carester's Caremag project secures €216M to build Europe's first large-scale rare earth recycling plant, reducing dependency on Chinese imports.
Explore the evolving rare earth trade landscape, where commodity traders like Traxys are reshaping global supply chains beyond China's dominance.
Navigate the complex landscape of critical minerals market dynamics, exploring technological shifts, geopolitical tensions, and emerging global industrial stra…
Japan invests €100M in French rare earth supply chain project, reducing China dependence and securing critical mineral resources for EV technology.
