HS code · 6-digit subheading

HS Code 7104.21 – Stones; diamonds, unworked or simply sawn or roughly shaped

HS code 7104.21 is the 6-digit subheading for stones, diamonds, unworked or simply sawn or roughly shaped. It is used for rough industrial diamonds, rough gem-quality diamonds, simply sawn diamond slices, roughly shaped diamond crystals and diamond bort.

What HS 7104.21 covers

This code specifically covers natural diamonds in their raw, unpolished state, either as rough stones or after initial basic shaping like sawing. These are the fundamental raw materials for the global diamond cutting and polishing industry. The international trade in these goods is dominated by large mining corporations, diamond tenders, and major diamond dealers. Key considerations for trade include the potential '4 Cs' (carat, cut potential, clarity, color) even in rough form, adherence to ethical sourcing protocols like the Kimberley Process Certification Scheme, and market speculation. This stage represents the very beginning of the diamond supply chain, where the inherent value of the stone is assessed before any significant value-adding processes occur.

Covers
  • Rough industrial diamonds
  • Rough gem-quality diamonds
  • Simply sawn diamond slices
  • Roughly shaped diamond crystals
  • Diamond bort
  • Diamond dust (from initial processing)
Examples
  • De Beers (rough diamond sales)
  • Alrosa (rough diamond production)
  • Petra Diamonds
  • Rio Tinto

Codes often confused with 7104.21

Common mistake. This is distinct from worked diamonds (710491) or synthetic diamonds (710429). The key is 'unworked or simply sawn or roughly shaped' and 'diamonds'.

7104.91Stones; diamonds, n.e.c. in heading 7104, worked or graded but not strung, mounted or set; ungraded synthetic or reconstructed precious or semi-precious stones, temporarily strung for convenience of transport7104.29Stones; synthetic or reconstructed precious or semi-precious n.e.c. in heading 7104, unworked or simply sawn or roughly shaped

Top exporters and importers of HS code 710421, 2025

In 2025, the largest exporter of HS code 710421 in UN Comtrade data was Hong Kong, with 44% of world exports; the largest importer in UN Comtrade data was India, with 59% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.

Top exporters 2025 · share of world exports

  1. 1 Hong Kong $601M
  2. 2 China $295M
  3. 3 United Arab Emirates* ~$175M

World total: $1.4B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 India $961M
  2. 2 Hong Kong $340M
  3. 3 United Arab Emirates* ~$279M

World total: $1.6B Reported figures on UN Comtrade ↗

How these figures are built

109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).

Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.

Brazil NCM code for 7104.21

Brazil does not split HS 7104.21: its NCM code is 7104.21.00.

  1. 7104.21.00 Synthetic diamonds, unworked, sawn or rough-shapedDiamantes

All Brazil NCM codes in heading 71.04 →

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.

Questions about HS 7104.21

What is HS code 710421?

HS code 710421 is a 6-digit subheading in the Harmonized System that covers: Stones; diamonds, unworked or simply sawn or roughly shaped. This code specifically covers natural diamonds in their raw, unpolished state, either as rough stones or after initial basic shaping like sawing. These are the fundamental raw materials for the global diamond cutting and polishing industry. The international trade in these goods is dominated by large mining corporations, diamond tenders, and major diamond dealers. Key considerations for trade include the potential '4 Cs' (carat, cut potential, clarity, color) even in rough form, adherence to ethical sourcing protocols like the Kimberley Process Certification Scheme, and market speculation. This stage represents the very beginning of the diamond supply chain, where the inherent value of the stone is assessed before any significant value-adding processes occur.

What products fall under HS code 710421?

Rough industrial diamonds, Rough gem-quality diamonds, Simply sawn diamond slices, Roughly shaped diamond crystals, Diamond bort, Diamond dust (from initial processing)

What are common misclassifications for HS code 710421?

This is distinct from worked diamonds (710491) or synthetic diamonds (710429). The key is 'unworked or simply sawn or roughly shaped' and 'diamonds'.

Which countries are the top exporters of goods under HS code 710421?

In 2025, the top exporters of HS code 710421 in UN Comtrade data were Hong Kong ($601M, 44% of world exports), China ($295M) and the United Arab Emirates (about $175M). World exports came to about $1.4B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

Which countries are the top importers of goods under HS code 710421?

In 2025, the top importers of HS code 710421 in UN Comtrade data were India ($961M, 59% of world imports), Hong Kong ($340M) and the United Arab Emirates (about $279M). World imports came to about $1.6B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

How is HS code 710421 structured?

HS code 710421 is a 6-digit subheading under the Harmonized System. The first 2 digits (71) identify the chapter, digits 3-4 (04) identify the heading, and digits 5-6 (21) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 710421?

In Brazil, HS code 710421 is NCM 7104.21.00. The last two digits are 00 because Brazil does not split this HS code further.