Import/export HS code 710421: Diamonds (synthetic or lab-made)
Man-made diamonds, not set or mounted, used in jewelry or industry
Why this is important if you are looking for potential customers in the UK:
- It helps you understand the market size for your product in the UK.
- It provides you with a list of potential leads who have bought similar products.
* UK only, last 24 months analysed
Imports by country
What this shows: Import market volume by exporter country into the UK.
Top 5 values
| Country | £ |
|---|---|
| Thailand | 10,119,946 |
| India | 569,886 |
| United States | 477,475 |
| Germany | 277,555 |
| Ireland | 70,391 |
Countries rank shift: first 12 months vs second 12 months
What this shows: Countries are on both sides of the Sankey. Left side is sorted by first 12-month volume, right side by second 12-month volume, so rank changes are visible from line crossings.
Top 10 values
| Country | First 12m £ | Second 12m £ | Delta £ |
|---|---|---|---|
| Thailand | 60,637 | 10,059,309 | +9,998,672 |
| India | 131,628 | 438,258 | +306,630 |
| United States | 288,243 | 189,232 | -99,011 |
| Germany | 61,945 | 215,610 | +153,665 |
| Ireland | 46,367 | 24,024 | -22,343 |
| Belgium | 25,715 | 29,157 | +3,442 |
| Netherlands | 21,469 | 3,156 | -18,313 |
| Switzerland | 5,657 | 9,453 | +3,796 |
| China, Hong Kong Special Administrative Region | 1,600 | 8,719 | +7,119 |
| China | 0 | 6,303 | +6,303 |
Imports by country of origin
What this shows: Import volume by production origin country. Differences from exporter-country data can indicate re-export routes.
Top 5 values
| Origin | £ |
|---|---|
| United States | 5,460,129 |
| United Kingdom | 3,306,847 |
| Thailand | 1,730,885 |
| India | 734,664 |
| Germany | 274,258 |
Country of origin rank shift: first 12 months vs second 12 months
What this shows: Origin countries are on both sides of the Sankey. Left side is sorted by first 12-month import value, right side by second 12-month import value, so rank changes are visible from line crossings.
Top 10 values
| Origin | First 12m £ | Second 12m £ | Delta £ |
|---|---|---|---|
| United States | 212,293 | 5,247,836 | +5,035,543 |
| United Kingdom | 22,792 | 3,284,055 | +3,261,263 |
| Thailand | 10,743 | 1,720,142 | +1,709,399 |
| India | 252,719 | 481,945 | +229,226 |
| Germany | 58,648 | 215,610 | +156,962 |
| Ireland | 46,367 | 15,455 | -30,912 |
| Netherlands | 21,469 | 3,156 | -18,313 |
| Belgium | 16,630 | 0 | -16,630 |
| China | 0 | 13,510 | +13,510 |
| China, Hong Kong Special Administrative Region | 1,600 | 1,512 | -88 |
Importers across UK regions
What this shows: Number of importing companies by UK ITL2 region.
Top 5 values
| UK region | Companies |
|---|---|
| Berkshire, Buckinghamshire and Oxfordshire | 3 |
| Bedfordshire and Hertfordshire | 1 |
| North Wales | 1 |
| Outer London - South | 1 |
| Outer London - West and North West | 1 |
UK regions rank shift: first 12 months vs second 12 months
What this shows: UK regions are on both sides of the Sankey. Left side is sorted by first 12-month importer count, right side by second 12-month importer count, so rank changes are visible from line crossings.
Top 10 values
| UK region | First 12m | Second 12m | Delta |
|---|---|---|---|
| Berkshire, Buckinghamshire and Oxfordshire | 2 | 3 | +1 |
| Bedfordshire and Hertfordshire | 0 | 1 | +1 |
| North Wales | 1 | 1 | +0 |
| Outer London - South | 1 | 0 | -1 |
| Outer London - West and North West | 1 | 1 | +0 |
Import volume by transport
What this shows: Import value by transport mode used to bring goods into the UK.
Top 5 values
| Transport | £ |
|---|---|
| Air transport | 11,616,983 |
| Sea transport (not vehicle on ferry) | 11,730 |
Transport rank shift: first 12 months vs second 12 months
What this shows: Transport modes are on both sides of the Sankey. Left side is sorted by first 12-month import value, right side by second 12-month import value, so rank changes are visible from line crossings.
Top 10 values
| Transport | First 12m £ | Second 12m £ | Delta £ |
|---|---|---|---|
| Air transport | 639,048 | 10,977,935 | +10,338,887 |
| Sea transport (not vehicle on ferry) | 4,213 | 7,517 | +3,304 |
Import volume by port
What this shows: Import value handled by each UK port.
Top 5 values
| Port | £ |
|---|---|
| London Heathrow Airport | 10,702,766 |
| East Midlands Airport | 595,777 |
| London Stansted Airport | 312,274 |
| London Gateway Port | 8,415 |
| Manchester Airport | 5,220 |
Port rank shift: first 12 months vs second 12 months
What this shows: Ports are on both sides of the Sankey. Left side is sorted by first 12-month import value, right side by second 12-month import value, so rank changes are visible from line crossings.
Top 10 values
| Port | First 12m £ | Second 12m £ | Delta £ |
|---|---|---|---|
| London Heathrow Airport | 181,884 | 10,520,882 | +10,338,998 |
| East Midlands Airport | 221,358 | 374,419 | +153,061 |
| London Stansted Airport | 234,860 | 77,414 | -157,446 |
| London Gateway Port | 4,213 | 4,202 | -11 |
| Manchester Airport | 0 | 5,220 | +5,220 |
| Thamesport | 0 | 3,315 | +3,315 |
| Birmingham Airport | 946 | 0 | -946 |
Importer companies by SIC division
What this shows: Industry breakdown (SIC divisions) of importing companies.
Top 5 values
| SIC | Companies |
|---|---|
| Other manufacturing | 2 |
| Wholesale trade, except of motor vehicles and motorcycles | 2 |
| Architectural and engineering activities; technical testing and analysis | 1 |
| Financial service activities, except insurance and pension funding | 1 |
| Manufacture of computer, electronic and optical products | 1 |
Importer companies over time
What this shows: Monthly count of unique importing companies.
Latest 5
| Month | Companies |
|---|---|
| 2026-04 | 2 |
| 2026-03 | 2 |
| 2026-02 | 1 |
| 2026-01 | 1 |
| 2025-12 | 2 |
Top importers
What this shows: Companies with the highest number of months traded for this HS code.
Importer company size by revenue band
What this shows: Distribution of importers across company revenue bands.
Top 5 values
| Revenue | Companies |
|---|---|
| 1m-15m | 3 |
| 15m-54m | 2 |
| 54m+ | 2 |
| Other | 1 |
Import seasonality
What this shows: Average monthly import pattern from historical data.
Exports by country
What this shows: Export market volume by destination country from the UK.
Top 5 values
| Country | £ |
|---|---|
| Thailand | 2,625,919 |
| India | 515,165 |
| United States | 175,674 |
| Canada | 127,502 |
| Germany | 116,348 |
Export countries rank shift: first 12 months vs second 12 months
What this shows: Destination countries are on both sides of the Sankey. Left side is sorted by first 12-month export volume, right side by second 12-month export volume, so rank changes are visible from line crossings.
Top 10 values
| Country | First 12m £ | Second 12m £ | Delta £ |
|---|---|---|---|
| Thailand | 617,461 | 2,008,458 | +1,390,997 |
| India | 34,405 | 480,760 | +446,355 |
| United States | 158,564 | 17,110 | -141,454 |
| Canada | 94,315 | 33,187 | -61,128 |
| Germany | 72,795 | 43,553 | -29,242 |
| United Arab Emirates | 63,349 | 0 | -63,349 |
| China, Hong Kong Special Administrative Region | 32,671 | 3,703 | -28,968 |
| Sweden | 26,617 | 0 | -26,617 |
| Italy | 6,242 | 15,774 | +9,532 |
| Belgium | 15,310 | 6,250 | -9,060 |
Export volume by transport
What this shows: Export value by transport mode used to ship goods from the UK.
Top 5 values
| Transport | £ |
|---|---|
| Air transport | 3,567,947 |
| Roll on Roll off (RORO) | 220,871 |
Export transport rank shift: first 12 months vs second 12 months
What this shows: Transport modes are on both sides of the Sankey. Left side is sorted by first 12-month export value, right side by second 12-month export value, so rank changes are visible from line crossings.
Top 10 values
| Transport | First 12m £ | Second 12m £ | Delta £ |
|---|---|---|---|
| Air transport | 930,662 | 2,637,285 | +1,706,623 |
| Roll on Roll off (RORO) | 220,871 | 0 | -220,871 |
Export volume by port
What this shows: Export value handled by each UK port.
Top 5 values
| Port | £ |
|---|---|
| London Heathrow Airport | 2,953,325 |
| London Stansted Airport | 334,141 |
| London | 220,871 |
| East Midlands Airport | 219,508 |
| ZLC | 58,382 |
Export port rank shift: first 12 months vs second 12 months
What this shows: Ports are on both sides of the Sankey. Left side is sorted by first 12-month export value, right side by second 12-month export value, so rank changes are visible from line crossings.
Top 10 values
| Port | First 12m £ | Second 12m £ | Delta £ |
|---|---|---|---|
| London Heathrow Airport | 457,388 | 2,495,937 | +2,038,549 |
| London Stansted Airport | 299,620 | 34,521 | -265,099 |
| London | 220,871 | 0 | -220,871 |
| East Midlands Airport | 126,799 | 92,709 | -34,090 |
| ZLC | 45,593 | 12,789 | -32,804 |
| Manchester Airport | 1,262 | 1,329 | +67 |
Quick facts
HS code: 710421
Coverage: United Kingdom, most metrics for the last 24 months
Description: Man-made diamonds, not set or mounted, used in jewelry or industry