Diamond Industry September 2025 —

1) 2025 Snapshot (What Changed)

Sanctions and traceability are now day-to-day requirements. The EU/G7 regime runs through a “sunrise” period in 2025 with documentary verification; full G7 traceability for natural diamonds ≥0.5 ct becomes mandatory on January 1, 2026. Antwerp functions as the EU rough import node with potential physical checks. Rough imports since March 1, 2025 require KP certificates listing country(ies) of mining origin.
Russian supply remains restricted by G7/EU rules; flows skew toward non-G7 markets and inventories are actively managed.
De Beers has exited lab-grown jewelry retail, refocusing on natural provenance, detection technology, and brand marketing.
Supply is shifting: some Canadian assets wind down toward 2026, Angola ramps (e.g., Luele/Luaxe), and exploration continues elsewhere.
Lab-grown diamond (LGD) prices have reset sharply; a mid-size LGD solitaire that once commanded several thousand dollars now clears closer to the low thousands. LGD value share at many U.S. retailers approaches one-fifth.
Grading terminology is evolving: for LGDs, major labs are moving toward descriptive language rather than traditional natural-diamond 4Cs nomenclature.

2) Compliance & Logistics: The 2025 Rulebook

Scope & thresholds

Natural rough and polished diamonds ≥0.5 ct fall under the G7 traceability regime from 2026; 2025 requires robust documentation.

Operational checklist (EU/G7 trade, 2025)

Capture and retain for every shipment: buyer/seller, CN codes, parcel count, carat weights (flag ≥0.5 ct), route, value, and country(ies) of mining origin.
Prefer single-origin KP for rough; if mixed, ensure all mining origins are explicitly listed.
For EU imports, plan Antwerp node lead time and possible physical inspections.
Understand grandfathering for stocks physically present before rules took effect and procedures for temporary import/export (trade fairs, repairs).

3) Supply Map (Mines, Flows, Policy)

Botswana–De Beers: long-term sales agreement increases the share of Debswana production sold through Botswana’s state channel over the coming decade, gradually diversifying rough beyond traditional sightholder routes.
Russia: continued restrictions, output management, and financing pressure; expect irregular flows outside G7.
Angola: production growth from new kimberlite developments and a multi-year investment push.
Canada: Diavik heads toward closure in 2026; Ekati curtailed; logistics remain sensitive to seasonal and climate constraints.

4) Demand & Pricing (Natural vs. Lab-Grown)

Natural

U.S. steady but with a softer value mix; China and Japan uneven; luxury spending is selective.
Rough prices remain below 2022 peaks; producers balance price and volume via sales schedules.

Lab-Grown

Wholesale and retail prices have declined materially; turns are faster but residual values are low.
Clear separation of LGD and natural assortments is now a margin-protection best practice.

Practical pricing notes

Natural: protect provenance premiums (e.g., Canada, Botswana, legacy origins); anchor price to live market comps and assortments.
LGD: use dynamic markdown cadence, avoid lifetime value promises, and disclose residual value realities.

5) Technology Stack: Grading, Detection, Traceability

Identification & detection

HPHT vs. CVD LGDs present distinct spectroscopic signatures. Melee screening at goods-in and pre-setting using automated devices is standard to keep false positives and leakage low.

AI grading and workflow

AI-assisted grading shortens cycle time; validate outputs against your target certificate lab with defined deltas and escalation paths.

Traceability & provenance

Digital ledgers and serialized scanning at key custody points are becoming table stakes and will dovetail with G7 traceability.

6) Sustainability (What’s Real vs. Marketing)

LGD carbon footprints vary widely by energy mix; renewables-based growth is far lower than fossil-heavy grids. Avoid blanket claims for either category.
Third-party sustainability standards now cover both natural and LGD on multi-pillar ESG criteria. Align claims, invoices, and audit trails with the chosen standard.

7) Midstream Operations (Finance, Inventory, KPIs)

Banking & liquidity

Tighter trade credit favors faster turns, smaller assortments, and disciplined purchase gating.

Production KPIs

Rough-to-polished yield %, saw loss %, re-cut rate, cycle time (days), grading TAT, screening referral rate, return/warranty cost per SKU (especially LGD).

Retail KPIs

Sell-through (30/60/90) by origin (natural vs. LGD), attachment rates on service plans, discount leakage by channel, trade-in liability (natural).

8) Implementation Checklists

A) G7/EU compliance (now–Dec 31, 2025)

Map all goods ≥0.5 ct. Ensure origin-specific KP on rough. Maintain a documentation pack per shipment (including origins and route). Build Antwerp processing time into SLAs.

B) Separate pipelines

Distinct SKU prefixes, catalog trees, bins, imagery, disclosures, and trade-in rules for LGD vs. natural to prevent cross-price contamination.

C) Tech & process

Mandatory melee screening at inbound and pre-setting; record device batch IDs in ERP for traceability.
Pilot AI grading where speed matters; define acceptable lab deltas and exceptions.
Onboard to a provenance solution that exports data aligned with G7 traceability.

D) Pricing governance

Natural: guard branded/provenance premiums; set escalation rules for discounting.
LGD: explicit markdown cadence; clear disclosures on residual values; avoid lifetime upgrade guarantees.

9) Quick Reference: Numbers You’ll Quote in 2025

EU/G7: sunrise period ends December 31, 2025; full traceability starts January 1, 2026 for ≥0.5 ct. Antwerp is the rough import node for EU verification. KP certificates must state mining origin(s) for rough imports (rule active since March 2025).
De Beers: focus on natural diamonds and detection; rough demand/prices below 2022 peaks.
India: polished exports have been under pressure; cutters optimize mix and inventory days-on-hand.
LGD: mid-size stones commonly clear near low-thousand-dollar price points; share by value at some U.S. retailers approaches one-fifth.
Fancy color: price indices have been broadly flat to slightly negative, with pinks relatively resilient.

10) Glossary

KP: Kimberley Process certificate for rough diamonds.
G7 certificate: Verification identifier issued at import under the G7/EU scheme, used to support downstream checks from 2026.
HPHT/CVD: Lab-grown methods with different physical signatures relevant for detection and grading workflows.

September 2025 diamond industry report