U.S. exports of Industrial Diamonds, Worked (Beyond Simply Sawn, Cleaved or Bruted) (SITC 27719) totaled $588K in August 2026.
Importers of Industrial Diamonds, Worked (Beyond Simply Sawn, Cleaved or Bruted) paid $19K in duties in August 2026, an average duty rate of 6.99% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Industrial Diamonds, Worked (Beyond Simply Sawn, Cleaved or Bruted) imports of $276K in August 2026 ran 20% below the year-to-date monthly average of $343K.
Last updated: August 2026 dataWorked industrial diamonds — processed beyond the initial sawn, cleaved, or bruted stage — include shaped, polished, or otherwise finished stones used as precision cutting inserts, wire-drawing dies, dressing tools, and heat spreaders in electronics. The value-add from working is substantial, and the distinction from unworked industrial diamonds (SITC 27711) is the key classification boundary. Both natural and synthetic worked industrial diamonds compete in this space, with synthetic stones increasingly dominant in abrasive and cutting-tool applications due to consistent quality and controlled sizing.
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20 import shipments a month
Sawing, cleaving, and bruting are considered minimal processing and remain within the unworked heading (27711). Any further shaping — such as grinding, polishing, lapping, or forming into a specific geometry for a tool insert or die — constitutes 'working' and moves the product into the worked category (27719). The commercial form of the finished product (e.g., a shaped die blank versus a rough stone) is the practical indicator.
Worked industrial diamonds are not broadly subject to major antidumping or countervailing duty orders in the US at this time, but importers should verify current CBP and USITC guidance, particularly for synthetic diamond products from specific origins where trade-remedy investigations have occurred in related abrasive categories. Trade-remedy landscapes evolve; consult a licensed customs broker for current status.
Basic heading 153 of 239 in section 2
Basic heading 27719 · $588K of $7.8B
Exports · August 2026
destination
Thailand and Hong Kong together take 54% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
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ImportsExports
Imports
$276KYoY · free account
Exports
$588KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.5M of Industrial Diamonds, Worked (Beyond Simply Sawn, Cleaved or Bruted) and exported $36.8M.
Through August 2026. Source: U.S. Census Bureau.