Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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Diamonds, nonindustrial, unworked or simply sawn, cleaved or bruted

In short

  • The US imported $6.0M of this product over the 12 months to August 2026, down 93% on the year before.
  • Botswana is the largest supplier, with 85.8% of US imports; Namibia is next, with 7.7%.
  • South Africa is the cheapest main supplier before and after freight and duty, landing at $25.97/carat.
  • Duty paid averaged 0.6% of the value of imports in August 2026, down 16.6 points on a year earlier.
  • Botswana is gaining share: 59.2% over the last 12 months, up from 20.0%.
  • 1 Federal Register notice named this product's tariff codes in the last 12 months.

US imports, Aug 2026

$1.8M

↑ +1178% vs Aug 2025

Last 12 months

$6.0M

↓ −93% vs the 12 months before

Average duty paid

0.6%

↓ −16.6 pts vs Aug 2025

Top supplier

Botswana

85.8% of US imports

US imports by month

The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugDuty ↓
Show the numbers
MonthUS imports
August 2025$140K
September 2025$699K
October 2025$673K
November 2025$861K
December 2025$278K
January 2026$192K
February 2026$339K
March 2026$53K
April 2026$333K
May 2026$150K
June 2026$279K
July 2026$394K
August 2026$1.8M

What changed

  • US imports were $1.8M in August 2026, up 356% from July 2026 and up 1178% from August 2025.
  • Over the 12 months to August 2026 they totalled $6.0M, down 93% on the 12 months before.
  • Biggest moves in market share since July 2026: Botswana up from 77.2% to 85.8%, Angola down from 9.0% to 0.0%.
  • Average price from Botswana rose 157% since July 2026, to $46.96/carat.
  • Duty paid on imports from Namibia fell from 10.0% to 0.0% of their value since July 2026.
  • Duty paid on imports from Botswana fell from 6.2% to 0.0% of their value since July 2026.

US trade by year

US imports were $6.0M in the 12 months to Aug 2026, down 99% on the 12 months to Aug 2017. US exports were $11.5M, down 99%. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

2017201820192020202120222023202420252026Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$992.9M
12 months to Aug 2018$901.7M
12 months to Aug 2019$446.1M
12 months to Aug 2020$209.7M
12 months to Aug 2021$455.8M
12 months to Aug 2022$378.0M
12 months to Aug 2023$232.3M
12 months to Aug 2024$197.0M
12 months to Aug 2025$91.4M
12 months to Aug 2026$6.0M
  • Botswana
  • South Africa
  • Namibia
  • Angola
  • All countries
Share of US imports
Show the numbers
PeriodBotswanaSouth AfricaNamibiaAngola
12 months to Aug 201746.7%20.9%3.4%16.2%
12 months to Aug 201857.2%11.2%3.0%11.3%
12 months to Aug 201939.2%20.4%8.5%1.1%
12 months to Aug 202019.6%22.1%17.0%3.7%
12 months to Aug 202115.7%52.6%15.1%3.5%
12 months to Aug 202226.5%35.4%11.0%2.1%
12 months to Aug 202324.7%20.4%3.2%11.4%
12 months to Aug 202427.6%17.8%5.9%9.2%
12 months to Aug 202520.0%16.9%4.1%4.1%
12 months to Aug 202659.2%16.7%10.1%6.5%
Duty paid, % of value
Show the numbers
PeriodBotswanaSouth AfricaNamibiaAngolaAll countries
12 months to Aug 20170.0%0.0%0.0%0.0%0.0%
12 months to Aug 20180.0%0.0%0.0%0.0%0.0%
12 months to Aug 20190.0%0.0%0.0%0.0%0.0%
12 months to Aug 20200.0%0.0%0.0%0.0%0.0%
12 months to Aug 20210.0%0.0%0.0%0.0%0.0%
12 months to Aug 20220.0%0.0%0.0%0.0%0.0%
12 months to Aug 20230.0%0.0%0.0%0.0%0.0%
12 months to Aug 20240.0%0.0%0.0%0.0%0.0%
12 months to Aug 20251.9%0.6%1.6%0.3%0.6%
12 months to Aug 20267.3%20.9%11.2%13.9%10.7%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$6.0M−93%10.7%+10.1 pts$11.5M−84%
12 months to Aug 2025$91.4M−54%0.6%+0.6 pts$73.7M−61%
12 months to Aug 2024$197.0M−15%0.0%0.0 pts$188.6M−19%
12 months to Aug 2023$232.3M−39%0.0%0.0 pts$231.7M−31%
12 months to Aug 2022$378.0M−17%0.0%0.0 pts$334.5M−18%
12 months to Aug 2021$455.8M+117%0.0%0.0 pts$409.4M+105%
12 months to Aug 2020$209.7M−53%0.0%0.0 pts$199.7M−43%
12 months to Aug 2019$446.1M−51%0.0%0.0 pts$353.1M−54%
12 months to Aug 2018$901.7M−9.2%0.0%0.0 pts$765.1M−6.3%
12 months to Aug 2017$992.9M0.0%$816.8M

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.

CountryUS importsShareAverage priceDuty paidLast 13 months
Botswana$1.5M85.8%+59.5 pts$46.96/carat−62%0.0%−15.0 pts
Namibia$139K7.7%−32.7 pts$53.46/carat−69%0.0%−11.7 pts
South Africa$102K5.7%−19.2 pts$16.86/carat−97%9.5%−20.5 pts
Canada$14K0.8%+0.1 pts$21.55/carat−50%10.0%+10.0 pts
All countries$1.8M100.0%$42.62/carat−75%0.6%−16.6 pts

The 3 largest suppliers had 86.0% of US imports over the last 12 months.

Landed cost by origin

What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.

  • Price
  • Freight and insurance
  • Duty
CountryPriceFreight and insuranceDutyLanded costMake-up
South Africa$23.50/carat$0.18/carat0.8% of price$2.29/carat9.8% of price$25.97/carat−51%
Botswana$33.99/carat$0.22/carat0.7% of price$0.55/carat1.6% of price$34.77/carat−77%
Angola$42.41/carat$0.44/carat1.0% of price$4.24/carat10.0% of price$47.09/carat−97%
Namibia$50.01/carat$0.05/carat0.1% of price$1.19/carat2.4% of price$51.25/carat−40%
All countries$33.61/carat$0.21/carat0.6% of price$0.91/carat2.7% of price$34.73/carat−67%

Landed at a US port, South Africa was cheapest, at $25.97/carat: 25.3% below Botswana.

Landed cost from Angola fell 97% on a year earlier, to $47.09/carat, mostly on price: $1,583/carat then, $42.41/carat now.

How the market is shifting

Botswana gained the most share: 59.2% of US imports over the last 12 months, up from 20.0% in the 12 months before. Belgium lost the most: 1.1%, down from 4.7%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

  • Botswana
  • South Africa
  • Namibia
  • Angola
  • All countries
Share of US imports
Show the numbers
MonthBotswanaSouth AfricaNamibiaAngola
September 20247.3%33.1%0.0%0.4%
October 202414.0%4.9%9.6%12.9%
November 202471.3%6.3%4.3%4.7%
December 202429.0%14.4%2.7%1.4%
January 202510.8%58.8%6.1%0.0%
February 20253.4%25.9%1.8%3.0%
March 20259.8%3.8%2.2%0.8%
April 202517.4%40.4%6.4%24.6%
May 202543.7%19.4%20.4%9.9%
June 202588.4%7.9%3.0%0.0%
July 202538.4%47.1%12.5%0.0%
August 202526.3%24.9%40.5%6.8%
September 202536.0%8.6%17.9%21.5%
October 202572.1%6.7%18.5%0.0%
November 202549.0%10.9%15.9%9.8%
December 202562.9%6.0%14.9%0.0%
January 20267.6%49.9%0.0%37.3%
February 202614.1%84.7%0.0%1.2%
March 202662.1%0.0%0.0%0.0%
April 202639.9%48.6%0.0%0.0%
May 202627.5%25.7%0.9%0.0%
June 202647.0%35.6%0.0%17.4%
July 202677.2%2.8%11.0%9.0%
August 202685.8%5.7%7.7%0.0%
Duty paid, % of value
Show the numbers
MonthBotswanaSouth AfricaNamibiaAngolaAll countries
September 20240.0%0.0%0.0%0.0%0.0%
October 20240.0%0.0%0.0%0.0%0.0%
November 20240.0%0.0%0.0%0.0%0.0%
December 20240.0%0.0%0.0%0.0%0.0%
January 20250.0%0.0%0.0%n/a0.0%
February 20250.0%0.0%0.0%0.0%0.0%
March 20250.0%0.0%0.0%0.0%0.1%
April 202510.0%0.3%10.0%0.0%3.1%
May 202510.0%10.0%10.0%10.0%10.8%
June 202510.0%10.0%10.0%n/a10.1%
July 202510.0%10.0%10.0%n/a10.3%
August 202515.0%30.0%11.7%15.0%17.2%
September 202515.0%30.0%15.0%15.0%16.7%
October 202515.0%30.0%15.0%n/a16.5%
November 202515.0%30.0%15.0%15.0%17.1%
December 202515.0%30.0%15.0%n/a16.5%
January 202615.0%30.0%n/a15.0%14.6%
February 202612.9%30.0%n/a15.0%27.4%
March 202610.0%n/an/an/a10.0%
April 202610.0%10.0%n/an/a8.9%
May 202610.0%10.0%10.0%n/a5.6%
June 202610.0%10.0%n/a10.0%10.0%
July 20266.2%10.0%10.0%10.0%7.0%
August 20260.0%9.5%0.0%n/a0.6%

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

  1. March 2026 · Duty paid: all countries 17.1% → 8.9%.
  2. March–June 2025 · Duty paid: Botswana 0.0% → 10.0%, South Africa 0.0% → 10.0%, Namibia 0.0% → 10.0%, all countries 1.6% → 13.5%.

Federal Register notices from the last 12 months that list this product's tariff codes. A notice can add a duty, exclude products from one or only mention them, so read each for what it changes. Search the Federal Register for 7102.31

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. Jfk International Airport, NY$5.9M · 98.0%
  2. Miami International Airport, FL$95K · 1.6%
  3. Cleveland, OH$24K · 0.4%

Where US exports go

US exports were $2.1M in August 2026, up 187% from August 2025, and $11.5M over the last 12 months, down 84% on the 12 months before. Fastest-growing market with 3% or more of US exports: United Kingdom, up 4181%.

MarketLast 12 monthsSharevs 12 months before
United Arab Emirates$2.3M19.7%−59%
Belgium$2.1M17.8%−96%
Japan$1.9M16.3%+251%
United Kingdom$1.7M14.7%+4181%
Israel$1.1M9.7%−90%
South Africa$966K8.4%−27%
India$587K5.1%−83%
Armenia$498K4.3%new
Other countries (5)$461K4.0%−50%
All countries$11.5M100.0%−84%

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 42 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
India$10.83Bin 2025−3.9%$1.3M0.0%
Belgium$2.44Bin 2025−25%$00.0%
Hong Kong$1.14Bin 2025−10%$972K0.1%
Botswana$947.6Min 2024+139%$819K0.1%
Israel$639.1Min 2025−22%$3.5M0.5%
South Africa$312.6Min 2025−36%$00.0%
China$190.8Min 2025−42%$00.0%
Lebanon$132.6Min 2024−45%$00.0%

The biggest market outside the US is India, which imported $10.83B of this product in 2025, under 0.1% of it from the US.

Of these, imports into Botswana grew fastest: up 139% from 2023 to 2024.

Other products under heading 7102: diamonds, whether or not worked, but not mounted or set. US trade over the 12 months to August 2026.

About these figures
  • Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
  • US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
  • Average price is customs value divided by quantity (carats), across all of the product's 10-digit lines.
  • Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
  • Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
  • Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
  • Tariff notices are from the Federal Register, matched to this product by the HTS numbers in their text.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

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