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SITCSection 2
U.S. imports of industrial diamonds, unworked or simply sawn, cleaved or bruted (SITC 27711) totaled $212K in April 2026, traded with 5 countries.
Importers of Industrial Diamonds, Unworked or Simply Sawn, Cleaved or Bruted paid $21K in duties in April 2026 — an effective duty rate of 10% on $212K in dutiable value, based on actual customs collections rather than the published tariff schedule. Industrial Diamonds, Unworked or Simply Sawn, Cleaved or Bruted imports of $212K in April 2026 ran 45% above the year-to-date monthly average of $146K.
Last updated: April 2026 dataUnworked and minimally processed industrial diamonds — including those simply sawn, cleaved, or bruted — are the raw input stage for abrasive, cutting, drilling, and wire-drawing tool manufacturing. Unlike gem diamonds, industrial diamonds are valued for hardness and thermal conductivity rather than optical properties, and a significant share of the market is now supplied by synthetic (lab-grown) diamonds that are classified alongside natural stones at this processing stage. The Kimberley Process Certification Scheme (KPCS) applies to rough natural diamonds, requiring a valid Kimberley Process certificate for import, even for industrial-grade material.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The Kimberley Process Certification Scheme applies to all rough natural diamonds, including industrial grades. Importers must present a valid KP certificate issued by the exporting country's designated authority. Synthetic industrial diamonds are not subject to the KP requirement, but documentation distinguishing natural from synthetic origin may be requested by CBP.
At the unworked or simply sawn/cleaved/bruted stage, both natural and synthetic industrial diamonds fall within the same SITC heading. The commercial distinction matters for Kimberley Process compliance and pricing, but the tariff classification does not separate them at this level. Importers should ensure invoices and certificates clearly state whether the diamonds are natural or synthetic to avoid compliance issues.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| BOTSWANA | $156K | -- | -$156K |
| BELGIUM | -- | $33K | +$33K |
| ANGOLA | $28K | -- | -$28K |
| GERMANY | -- | $27K | +$27K |
| KOREA, SOUTH | -- | $19K | +$19K |
Monthly import values over time
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