Product classification
HS code for Industrial diamonds (raw): 7102.21
Diamonds, industrial, unworked or simply sawn, cleaved or bruted, but not mounted or set.
Classification of industrial diamonds (raw) under HS 7102.21
Industrial diamonds in their raw or unworked state are classified under HS code 7102.21. This classification is governed by Chapter 71 of the Harmonized System, which deals with precious stones and metals. The determination of "industrial" status is based on the physical characteristics of the stone, such as color, clarity, and structural integrity, which render it unsuitable for jewelry but ideal for technical applications. Under GRI 1, heading 7102 covers diamonds whether or not worked, but not mounted or set. Sub-heading 7102.21 specifically targets industrial diamonds that are unworked or simply sawn, cleaved, or bruted. This means the diamonds have not undergone the polishing or faceting processes associated with gemstones. The classification remains in 7102.21 even if the stones are sorted and graded, provided they have not been shaped into specific tool components or finished gems.
- Covers
- Unworked natural industrial diamonds (boart)
- Sawn industrial diamond stones
- Cleaved diamond fragments for industrial use
- Bruted industrial diamonds
- Rough diamonds intended for abrasive wheel manufacturing
- Also under 7102.21
- Element Six industrial diamonds
- De Beers Industrial Diamonds
- Sumitomo Electric (synthetic industrial diamonds)
- Sandvik (using industrial diamonds)
- Kennametal (using industrial diamonds)
Codes often confused with 7102.21
Common mistake. The most frequent misclassification occurs with HS code 7102.31, which is reserved for non-industrial (gem-quality) diamonds in an unworked state. The distinction is often subjective and relies on trade standards for clarity and color. Another common error is confusing natural industrial diamonds with synthetic ones; synthetic or reconstructed diamonds are classified under 7104.91. Furthermore, if the diamonds have been crushed into powder or dust, they must be classified under 7105.10, regardless of whether they are natural or synthetic, as heading 7105 specifically covers diamond dust and powder.
Top exporters and importers of HS 710221 (the code used for industrial diamonds (raw)), 2025
In 2025, the largest exporter of HS 710221 (the code used for industrial diamonds (raw)) in UN Comtrade data was Angola, with 88% of world exports; the largest importer in UN Comtrade data was the United Arab Emirates, with about 86% of world imports. Zimbabwe did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 69% of its exports here ($161M, CEPII BACI), so it may also belong among the top exporters.
Figures cover everything classified under HS 710221, not only industrial diamonds (raw).
Top exporters 2025 · share of world exports
- 1 Angola $1.8B 88% of world exports
- 2 United Arab Emirates* ~$86M 4.2% of world exports · partner records ↗
- 3 Russia* ~$30M 1.5% of world exports · partner records ↗
Zimbabwe did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 69% of its exports here ($161M, CEPII BACI), so it may also belong among the top exporters.
World total: $2.0B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United Arab Emirates* ~$1.4B 86% of world imports · partner records ↗
- 2 India $154M 9.3% of world imports
- 3 Belgium $24M 1.4% of world imports
World total: $1.7B 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 industrial diamonds (raw)
Brazil classifies industrial diamonds (raw) under NCM 7102.21.00: HS 7102.21 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about industrial diamonds (raw)
What is the HS code for Industrial diamonds (raw)?
The HS code for Industrial diamonds (raw) is 710221 (Diamonds; industrial, unworked or simply sawn, cleaved or bruted, but not mounted or set). The HS code for raw, unworked, or simply sawn industrial diamonds is 7102.21.
How do I classify Industrial diamonds (raw) for customs?
Industrial diamonds (raw) is classified under HS code 710221 — Diamonds; industrial, unworked or simply sawn, cleaved or bruted, but not mounted or set. This is a 6-digit subheading level code.
Are synthetic diamonds included in this code?
No, synthetic industrial diamonds are classified under heading 7104, specifically 7104.91 for unworked or simply sawn stones.
Which countries are the top exporters of industrial diamonds (raw) (HS 710221)?
In 2025, the top exporters of HS 710221 (the code used for industrial diamonds (raw)) in UN Comtrade data were Angola ($1.8B, 88% of world exports), the United Arab Emirates (about $86M) and Russia (about $30M). World exports came to about $2.0B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Zimbabwe did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 69% of its exports here ($161M, CEPII BACI), so it may also belong among the top exporters.
Which countries are the top importers of industrial diamonds (raw) (HS 710221)?
In 2025, the top importers of HS 710221 (the code used for industrial diamonds (raw)) in UN Comtrade data were the United Arab Emirates (about $1.4B, 86% of world imports), India ($154M) and Belgium ($24M). World imports came to about $1.7B, 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.
Is the HS code for Industrial diamonds (raw) the same in all countries?
The base HS code 710221 for Industrial diamonds (raw) is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for industrial diamonds (raw) in Brazil?
In Brazil, industrial diamonds (raw) (HS 710221) is classified under NCM 7102.21.00.