Lucara Announces Updated Feasibility Study for Karowe Underground Project

Lucara's updated 2025 feasibility study for the Karowe Underground Project forecasts a ~10-year underground mine delivering 4.5 million recovered carats (37.3 Mt processed) and projected diamond revenue of $3.365 billion, with an after-tax unlevered NPV8% of $432.1 million and expected net income of over $1.3 billion. Pre-production capital is estimated at $779.2 million (of which $436.0 million has already been spent) with remaining pre-production costs of $343.2 million to be funded via operating cash flow and new financing; commercial production is targeted in H1 2028. The study confirms robust reserves (37.3 Mt, 4.547M ct Probable reserves, grade 12.2 cpht) and technical readiness (shafts sunk to depth, XRT processing validation), while lenders agreed waivers extending model/contract deadlines into early 2026 — a positive project de-risking step albeit contingent on securing remaining financing and execution risks described in the release.

Analysis

Market structure: Lucara (LUC.TO) is the clear beneficiary—a $432M after‑tax NPV8% project with $436M already sunk and $343M remaining implies strong incumbent advantage in large Type IIa stones (4.5M ct LOM; $3.365B revenue). Buyers of exceptional stones (luxury collectors, high‑end cutters, Botswana tax authority) capture outsized value; generic diamond producers see no direct benefit. Credit markets gain short‑term relief from lender waivers to Feb 28, 2026, but equity dilution risk and project financing terms will materially reprice the stock and credit spreads within weeks.

Risk assessment: Biggest tail risks are (1) technical—cave behaviour or XRT misclassification causing >20% production shortfall, (2) market—diamond price collapse of >20% (post‑tax NPV drops to ~$249M), and (3) financial—failure to secure <~$350M at acceptable terms leading to >25% equity dilution or covenant breach. Immediate (days) impact centers on lender communications and market reaction; short term (weeks/months) centers on Feb 28 and Mar 31 financing milestones; long term (years) centers on ramp to H1 2028 and legacy stone monetization timing.

Trade implications: If financing is secured on acceptable terms (debt <60% of remaining capex at coupon <9% or equity dilution <20%), LUC.TO becomes a tactical buy with asymmetric upside from legacy stones and concentrated high‑value recoveries—target 2–3% portfolio position with 18–36 month horizon. Pre‑milestone, hedge with short‑dated put spreads sized 30% of intended exposure and consider pairing long LUC.TO vs short higher‑risk diamond peers (e.g., PDL.L) to isolate large‑stone premium. Monitor auction realizations and any announced financing terms as primary catalysts.

Contrarian angles: Consensus under‑weights legacy/mega‑stone optionality—single stones (>US$5M) can swing annual cashflow materially; market may over‑penalize sunk capital ($436M) and treat remaining $343M as binary. Conversely, the project’s sensitivity to diamond pricing (–20% → NPV –43%) is underappreciated: a defensive sizing and clear financing thresholds are warranted. Unintended consequences include rushed stone sales depressing realized prices or government/tax scrutiny in Botswana if outsized legacy receipts materialize.

Key Decisions for Investors

• Conditional long: Establish a 2–3% portfolio long position in LUC.TO only after Lucara confirms by Feb 28, 2026 that financing commitments cover the $343.2M to completion with debt <=60% of remaining capex and coupon <=9%, or equity dilution <=20%; hold through H1 2028 ramp, target 18–36 month horizon.
• Hedge pre‑milestone: Buy a Mar‑Jun 2026 put spread on LUC.TO sized at ~30% of intended long exposure (e.g., 1% portfolio protection) to cap downside from financing failure or covenant/default announcements between now and Mar 31, 2026.
• Pair trade: If financing is secured, go long LUC.TO (2%) and short Petra Diamonds (PDL.L) (1–1.5%) to capture Karowe’s large‑stone pricing premium versus lower‑quality producers; rebalance if LUC.TO implied equity raise >25% or Petra announces material asset sales.
• Hard stop triggers: Reduce/exit exposure to zero if Lucara announces financing terms requiring >$200M new debt at coupon >9% or equity dilution >25%, or if realized diamond auction prices for 2026 trend down >15% vs FS baselines—these materially impair NPV (see sensitivity table).
• Monitor: Track three catalysts daily—(A) Feb 28, 2026 financing announcement, (B) Mar 31, 2026 Cost‑to‑Complete Certificate, and (C) next two large‑diamond auction results in 2026; trade only after catalyst clarity or size positions <1% ahead of outcomes.