U.S. imports of Industrial Diamonds, Unworked or Simply Sawn, Cleaved or Bruted (SITC 27711) totaled $159K in August 2026, imported from 7 countries.
Importers of Industrial Diamonds, Unworked or Simply Sawn, Cleaved or Bruted paid $2K in duties in August 2026, an average duty rate of 0.98% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Industrial Diamonds, Unworked or Simply Sawn, Cleaved or Bruted imports of $159K in August 2026 ran 13% above the year-to-date monthly average of $140K.
Last updated: August 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.
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17 import shipments a month
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.
Basic heading 169 of 239 in section 2
Basic heading 27711 · $159K of $3.8B
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ImportsExports
Imports
$159KYoY · free account
Exports
$96KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $1.4M of Industrial Diamonds, Unworked or Simply Sawn, Cleaved or Bruted and exported $2.4M.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Botswana and Democratic Republic of the Congo together supply 92% of it. South Africa pays 12.5% duty; Botswana 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.