U.S. imports of Industrial Diamonds, Unworked or Simply Sawn, Cleaved, or Bruted (HS 710221) 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 dataIndustrial-grade diamonds in their raw or minimally processed state — including miners' carbonados and other natural industrial stones — are subdivided at the US 10-digit level into carbonado miners' diamonds (7102211010), other miners' diamonds (7102211020), simply sawn/cleaved/bruted non-miners' stones (7102213000), and unworked industrial diamonds not elsewhere specified (7102214000). Botswana and South Africa are the primary sources, reflecting the concentration of natural industrial diamond production in southern Africa. These stones feed abrasive, cutting-tool, and drilling-bit manufacturing rather than jewelry supply chains, so buyers are typically industrial procurement teams rather than gem traders. The Kimberley Process Certification Scheme applies to all natural rough diamonds regardless of quality grade.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
17 import shipments a month
The Kimberley Process Certification Scheme applies to all rough diamonds, including industrial grades. Importers of unworked or simply processed industrial diamonds must present a valid KPCS certificate at entry, regardless of whether the stones have any gem value.
Carbonados are a specific polycrystalline form of natural industrial diamond, historically used in drill bits and heavy abrasive applications. The US tariff schedule carves them out separately (7102211010 and 7102211020) from other industrial diamonds because their physical structure and end-use profile differ from single-crystal industrial stones. Importers should confirm the mineralogical type with the supplier to select the correct 10-digit line.
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
destination
entry
rate provision · imports
92.2% enters free of duty; duty collected equals 0.98% of imports for consumption.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7102211020 | Industrial Miner's Diamonds NESOI | $130K | 0.54% | 4.28% | $697 |
| 7102214000 | Industrial Diamonds Unworked, NESOI | $17K | 4.99% | 39.91% | $853 |
| 7102211010 | Diam Indstrl Mnrs Crbnds Unwk Incl Swn Clvd Brtd | $12K | 0.00% | 0.00% | -- |
| 7102213000 | Ind Dimnds Smpl Swn Clvd or Brted Excpt Miners | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7102210000 | Indusrrl Diamonds Unwrkd or Sawn, Clvd or Brutd | $96K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Subheading 4 of 5 in heading 7102
Subheading 710221 · $159K of $478.4M
Trade Directory
List your company under HS 710221 — Industrial Diamonds, Unworked or Simply Sawn, Cleaved, or Bruted, so the companies trading it can find you. Be the first supplier listed.