Subheading · Chapter 71 · Heading 7104
7104.21: Other, unworked or simply sawn or roughly shaped: diamonds
Synthetic diamonds, unworked
Official description Diamonds
7104.21 is the HS subheading for synthetic diamonds, unworked, under heading 7104 in chapter 71.
What you pay
Importing into UK
Rates by national line · UK Global Tariff
UK lines →- 7104 21 00 00 Diamonds Freeg
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 1
- Additional dutyAdditional duties 35%
- Applies to goods from
- Belarus, Russia
- Legal act
- 2022 No. 598
- Documents
- 9014
Import requirements 1
- Import controlRestriction on entry into free circulation
- Applies to goods from
- all countries
- Legal act
- S.I. 2019/855, 2023 No. 440, S.I. 2022/395
- Documents
- 9011
- 9L49
- 9Y49
- 9022
- 9038
- 9009
- 9010
- 9017
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | Free |
| DCTS Comprehensive | Afghanistan, Angola, Bangladesh, Benin and 38 moreAfghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Congo - Kinshasa, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Liberia, Malawi, Mali, Mauritania, Myanmar (Burma), Nepal, Niger, Rwanda, São Tomé & Príncipe, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia | Free |
| European Union (including code " EU") | Free | |
| DCTS Enhanced | Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 moreAlgeria, Bolivia, Cape Verde, Congo - Brazzaville, Cook Islands, Kyrgyzstan, Micronesia, Mongolia, Nigeria, Niue, Pakistan, Philippines, Sri Lanka, Syria, Tajikistan, Uzbekistan, Vanuatu | Free |
| CARIFORUM | Antigua & Barbuda, Bahamas, Barbados, Belize and 10 moreAntigua & Barbuda, Bahamas, Barbados, Belize, Dominica, Dominican Republic, Grenada, Guyana, Jamaica, St Kitts & Nevis, St Lucia, St Vincent & the Grenadines, Suriname, Trinidad & Tobago | Free |
| OCTs (Overseas Countries and Territories) | Anguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands and 7 moreAnguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Montserrat, Pitcairn Islands, South Georgia & South Sandwich Islands, St Helena, Turks & Caicos Islands | Free |
| Central America | Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama | Free |
| SADC EPA | Botswana, Eswatini, Lesotho, Mozambique, Namibia | Free |
| Eastern and Southern Africa States | Madagascar, Mauritius, Seychelles, Zimbabwe | Free |
| CPTPP | Brunei, Malaysia | Free |
| UK–Andorra agreement | Andorra | Free |
| UK–Albania agreement | Albania | Free |
| UK–Australia agreement | Australia | Free |
| UK–Canada agreement | Canada | Free |
| UK–Switzerland agreement | Switzerland | Free |
| UK–Côte d’Ivoire agreement | Côte d’Ivoire | Free |
| UK–Chile agreement | Chile | Free |
| UK–Cameroon agreement | Cameroon | Free |
| UK–Colombia agreement | Colombia | Free |
| UK–Ceuta & Melilla agreement | Ceuta & Melilla | Free |
| UK–Ecuador agreement | Ecuador | Free |
| UK–Egypt agreement | Egypt | Free |
| UK–Fiji agreement | Fiji | Free |
| UK–Faroe Islands agreement | Faroe Islands | Free |
| UK–Georgia agreement | Georgia | Free |
| UK–Ghana agreement | Ghana | Free |
| DCTS Standard | Indonesia | Free |
| UK–Israel agreement | Israel | Free |
| UK–India agreement | India | Free |
| UK–Iceland agreement | Iceland | Free |
| UK–Jordan agreement | Jordan | Free |
| UK–Japan agreement | Japan | Free |
| UK–Kenya agreement | Kenya | Free |
| UK–South Korea agreement | South Korea | Free |
| UK–Lebanon agreement | Lebanon | Free |
| UK–Liechtenstein agreement | Liechtenstein | Free |
| UK–Morocco agreement | Morocco | Free |
| UK–Moldova agreement | Moldova | Free |
| UK–North Macedonia agreement | North Macedonia | Free |
| UK–Mexico agreement | Mexico | Free |
| UK–Norway agreement | Norway | Free |
| UK–New Zealand agreement | New Zealand | Free |
| UK–Peru agreement | Peru | Free |
| UK–Papua New Guinea agreement | Papua New Guinea | Free |
| UK–Palestinian Territories agreement | Palestinian Territories | Free |
| UK–Serbia agreement | Serbia | Free |
| UK–Solomon Islands agreement | Solomon Islands | Free |
| UK–Singapore agreement | Singapore | Free |
| UK–San Marino agreement | San Marino | Free |
| UK–Tunisia agreement | Tunisia | Free |
| UK–Türkiye agreement | Türkiye | Free |
| UK–Ukraine agreement | Ukraine | Free |
| UK–Vietnam agreement | Vietnam | Free |
| UK–Samoa agreement | Samoa | Free |
| UK–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
UK: imports by month
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
| United Kingdom | £3.3m | 51.2% | +22,932.8% |
 Thailand | £1.7m | 26.9% | +15,911.7% |
 India | £572k | 8.9% | +125% |
 United States | £405k | 6.3% | -92.1% |
 Germany | £311k | 4.9% | +368.7% |
 Belgium | £47k | 0.7% | +2,210.4% |
 Netherlands | £45k | 0.7% | — |
 China | £13k | 0.2% | +73.8% |
Same subheading in other tariffs
EU
TürkiyeWorld trade in 2024
Trade value (US$) no reported trade < US$94kUS$94k+US$4m+US$31m+> US$442m
Exports: 57
- Hong Kong SAR China: US$521m
- China: US$442m
- United Arab Emirates: US$246m
- United States: US$215m
- India: US$86m
- Thailand: US$31m
- Belgium: US$14m
- Botswana: US$11m
- Israel: US$9m
- Switzerland: US$8m
- Germany: US$8m
- Malaysia: US$8m
- United Kingdom: US$7m
- Japan: US$4m
- Russia: US$3m
- Ireland: US$3m
- Singapore: US$3m
- Ukraine: US$2m
- Canada: US$2m
- Netherlands: US$671k
- Tanzania: US$577k
- South Korea: US$344k
- France: US$324k
- Taiwan: US$303k
- Türkiye: US$151k
- Australia: US$108k
- Spain: US$94k
- Vietnam: US$61k
- Austria: US$60k
- Italy: US$57k
- South Africa: US$52k
- Sri Lanka: US$49k
- Lebanon: US$46k
- Romania: US$44k
- Angola: US$32k
- Denmark: US$18k
- Brazil: US$16k
- Curaçao: US$13k
- Czechia: US$12k
- Peru: US$6k
- Latvia: US$3k
- Egypt: US$2k
- Luxembourg: US$2k
- Costa Rica: US$2k
- Bangladesh: US$2k
- Indonesia: US$2k
- Croatia: US$500
- Sweden: US$500
- Kuwait: US$300
- Estonia: US$200
- Poland: US$200
- Bulgaria: US$100
- Slovakia: US$100
- Greece: US$0
- Hungary: US$0
- Lithuania: US$0
- Slovenia: US$0
Trade value (US$) no reported trade < US$58kUS$58k+US$1m+US$14m+> US$284m
Imports: 72
- India: US$820m
- Hong Kong SAR China: US$369m
- United Arab Emirates: US$284m
- Thailand: US$47m
- Ireland: US$36m
- China: US$16m
- Belgium: US$14m
- United States: US$14m
- Canada: US$4m
- Germany: US$3m
- Qatar: US$2m
- United Kingdom: US$2m
- Switzerland: US$2m
- Singapore: US$2m
- South Korea: US$2m
- Vietnam: US$1m
- Netherlands: US$1m
- Spain: US$1m
- Taiwan: US$915k
- Japan: US$759k
- Brazil: US$685k
- Israel: US$628k
- Saudi Arabia: US$624k
- France: US$283k
- South Africa: US$198k
- Italy: US$195k
- Indonesia: US$119k
- Cambodia: US$99k
- Austria: US$89k
- Denmark: US$88k
- Türkiye: US$88k
- Cyprus: US$68k
- Philippines: US$65k
- Guatemala: US$62k
- Armenia: US$58k
- Peru: US$55k
- Australia: US$51k
- Egypt: US$49k
- Serbia: US$46k
- Bahrain: US$41k
- Colombia: US$35k
- Costa Rica: US$34k
- Ecuador: US$31k
- Poland: US$25k
- Malaysia: US$22k
- Sweden: US$15k
- Russia: US$14k
- New Zealand: US$10k
- Panama: US$10k
- Mexico: US$10k
- Bulgaria: US$8k
- Czechia: US$8k
- Slovakia: US$7k
- Jordan: US$7k
- Kuwait: US$6k
- Slovenia: US$6k
- Mauritius: US$5k
- Romania: US$5k
- Chile: US$5k
- Luxembourg: US$5k
Top exporters
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 |  Hong Kong SAR China | US$521m | 32% |
| 2 | China | US$442m | 27.2% |
| 3 |  United Arab Emirates | US$246m | 15.1% |
| 4 | United States | US$215m | 13.2% |
| 5 | India | US$86m | 5.3% |
| 6 | Thailand | US$31m | 1.9% |
| 7 | Belgium | US$14m | 0.9% |
| 8 |  Botswana | US$11m | 0.7% |
| 9 |  Israel | US$9m | 0.5% |
| 10 |  Switzerland | US$8m | 0.5% |
Top importers
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | India | US$820m | 50.4% |
| 2 | Hong Kong SAR China | US$369m | 22.7% |
| 3 | United Arab Emirates | US$284m | 17.4% |
| 4 | Thailand | US$47m | 2.9% |
| 5 |  Ireland | US$36m | 2.2% |
| 6 | China | US$16m | 1% |
| 7 | Belgium | US$14m | 0.9% |
| 8 | United States | US$14m | 0.9% |
| 9 |  Canada | US$4m | 0.2% |
| 10 | Germany | US$3m | 0.2% |
Code history
Since 2022; before, these goods were classified under 7104.20.
Subheading 7104.21 is a single line in the UK Global Tariff, where the duty is duty-free.
The EU Combined Nomenclature has one tariff line for subheading 7104.21; the duty is duty-free.
Goods from 174 countries can enter the UK at a preferential rate instead of the standard Free; 174 of them pay no duty at all, for example under DCTS Comprehensive or European Union.
In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.
In the 12 months to August 2026, the UK imported synthetic diamonds, unworked worth £6.4m (up 16% on the year before), at an average of £17,289.63 per kg; United Kingdom supplied 51%, followed by Thailand.
World trade in synthetic diamonds, unworked reached US$2bn in 2024, down 25.4% on 2023.
Hong Kong SAR China was the largest exporter with 32% of the total, ahead of China.
Questions and answers
What is the HS code for other, unworked or simply sawn or roughly shaped: diamonds?
Other, unworked or simply sawn or roughly shaped: diamonds fall under HS subheading 7104.21, part of heading 7104, in section XIV of the Harmonized System.
What is the import duty on other, unworked or simply sawn or roughly shaped in the UK?
Under the UK Global Tariff, imports under 7104.21 from countries without a preferential agreement are free of duty. Preferential rates, anti-dumping duties and VAT are not included.
What is the import duty on other, unworked or simply sawn or roughly shaped in the EU?
Under the EU Combined Nomenclature, imports under 7104.21 from countries without a preferential agreement are free of duty. Preferential rates, anti-dumping duties and VAT are not included.
Which country exports the most other, unworked or simply sawn or roughly shaped?
Hong Kong SAR China, with US$521m in 2024 (32% of world exports).
Which countries can export synthetic diamonds, unworked to the UK duty-free?
174 countries pay no duty under a trade agreement or preference scheme, among them partners under DCTS Comprehensive, European Union, DCTS Enhanced. The goods must meet the agreement’s rules of origin and the importer needs proof of origin; otherwise the standard rate of Free applies. Pick a country above to see its rate.
Is there anti-dumping duty on synthetic diamonds, unworked?
The UK charges additional duty of 35% on goods from Belarus and Russia. Lower rates apply to the named exporters listed in the measure.
Where does the UK import synthetic diamonds, unworked from?
In the 12 months to August 2026, the largest suppliers were United Kingdom (51%), Thailand (27%) and India (9%), out of total imports of £6.4m.