Tanzania
Every USGS world production table for 2025 that names Tanzania: its share of each world total, its rank and its reserves.
Tanzania’s share of each world total, 2025
- Natural graphite3rd of 184.2%
- Pumice and pumicite13th of 161.7%
- Gemstones12th of 120.5%
Tanzania’s largest world share was in natural graphite: 4.2% in 2025. Its natural graphite output rose 178% from 2024 to 2025. It ranked third of 18 listed producers of natural graphite. USGS lists Tanzania separately in 3 of its 75 world production tables.
Production listings
ranks among countries with published figures
| Commodity | Measure | 2025 | Unit | Rank | Change on 2024 |
|---|---|---|---|---|---|
| Gemstones | Gem-quality natural diamond mine production | 320 | thousand carats | 12th of 12 | +0.6% |
| Natural graphite | Mine production | 75,000 | metric tons | 3rd of 18 | +178% |
| Pumice and pumicite | Mine production | 350 | thousand metric tons | 13th of 16 | 0% |
Reserves
2 reserve figures published for Tanzania
| Commodity | Measure | Reserves | Unit | Rank | World share |
|---|---|---|---|---|---|
| Natural graphite | Reserves | 18,000,000 | metric tons | 5th of 15 | 5.8% |
| Rare earths | Reserves | 890,000 | metric tons | 8th of 11 | – |
Similar producer profiles
most shared commodities, relative to both lists
Source: USGS Mineral Commodity Summaries 2026, world production and reserves tables. How ranks and shares are worked out.