Industrial Diamond Reserves by Country
Russia's reported industrial diamond reserves have moved in every year since 2020 — up, down, up, up, down. The figures come from the USGS Mineral Commodity Summaries 2019-2026 and describe estimated quantities that can be economically extracted. The table covers 7 countries, with 6 reported 2025 values, and listed reserves totaled 1,443 million carats in 2025. USGS reports a world reserve total of 1,700 million carats, rounded in the source.
Russia holds 750 million carats — exactly three times Botswana's 250. DR Congo and Angola tie for third at 150 each, with South Africa (87) and Zimbabwe (56) rounding out the reported values. The listed total excludes 250 million carats reported under Other countries. Australia's last reported 711 million carats still exceeds every current holder below Russia. Russia reported 650 million carats in 2020, jumped to 1,100 in 2021, fell to 600 in 2022, climbed to 860 and then 990, and dropped again to 750 in 2025. Among the countries still reporting in 2025, no other country moves on anything like this scale. The latest fall, from 990 to 750 (-24.2%), removed 240 million carats — nearly the entire reserves of Botswana, the second holder. Australia reported 640 million carats in 2019 against Russia's 650, then 625, 711 and 711 — a steady second place, ten million carats from the lead at its closest. It has reported nothing since 2022. Had its 711 figure held, Australia would still rank second in 2025. DR Congo has reported 150 million carats throughout the eight-year series, and Angola has matched that figure in every year since appearing in 2023. Zimbabwe joins the table for the first time in 2025 with 56 million carats, while Botswana drifted from 310 in 2020 to 250 and South Africa edged up 2 to 87 (+2.4%) — the only increase anywhere in 2025. Figures come from the USGS Mineral Commodity Summaries 2019-2026, with 2025 values estimated. Units are million carats, as reported by USGS. Empty means the source reported no value; 0 means the source reports zero. The source’s world total, where published, may be rounded, approximate, a lower bound, or a textual estimate, so shares are computed against the sum of the listed countries. Reserves and production are different measures and should not be combined without equalizing units.
Industrial Diamond Reserves by Country
Year
1
750
2025
2
711
2022
3
250
2025
4
150
2025
5
150
2025
6
87
2025
7
56
2025
Four turns in five years
The runner-up that left
A tie for third, a new name at the bottom
Industrial Diamond Reserves by Country
#
1
650
650
650
1100
600
860
990
750
2
150
150
150
150
150
150
150
150
3
-
-
-
-
-
150
150
150
4
120
640
625
711
711
-
-
-
5
90
90
310
300
300
280
250
250
6
70
54
130
120
120
95
85
87
7
-
-
-
-
-
-
-
56
Methodology
Frequently Asked Questions
What are industrial diamond reserves?
Industrial diamond reserves are estimated quantities of industrial diamond that can be economically extracted under applicable conditions, in million carats. Production measures the amount mined in a year.
Which countries hold the most industrial diamond reserves?
Russia (750 million carats) and Botswana (250) reported the largest 2025 values, followed by DR Congo and Angola (150 each).
Why does Australia show no recent value?
Australia last reported 711 million carats in 2022 and has no value in any later edition. An empty cell means not reported, not zero.
How close was Australia to the lead?
Within 10 million carats in 2019 (650 vs 640); it stopped reporting after 2022.
Data Disclaimer: Projected data (future years) are estimates based on mathematical models. Actual values may differ. Learn about our methodology →
Sources
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Updated: 15.09.2026https://www.usgs.gov/centers/national-minerals-information-center/mineral-commodity-summaries
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