这是什么？
Minerals people want because of how they look — hardness, clarity and colour, priced on rarity rather than on tonnage.
为何重要？
Gem mining is unusual in the sector: much of it is artisanal, values per tonne are extreme, and provenance rather than assay determines price.
该材料的深度文字内容尚未发布。以下所有内容均直接提取自原始数据集，内容完整。
生产主体
在地图上查看 →Mine production
Mine production thousands of carats 2025 (估计值) 全球合计 69,000 thousands of carats
USGS Mineral Commodity Summaries 2026 · Reported by value, not weight, because carat totals say nothing about worth. · 来源 ↗
横向滚动表格以查看其余列。
| 国家/地区 | 产量 | 占全球份额 |
|---|---|---|
| Russia | 21,000 | 30.4% |
| Angola | 13,000 | 18.8% |
| Canada | 13,000 | 18.8% |
| Botswana | 13,000 | 18.8% |
| Namibia | 2,300 | 3.3% |
| South Africa | 2,100 | 3.0% |
| Congo (Kinshasa) | 2,000 | 2.9% |
| Lesotho | 700.0 | 1.0% |
| Zimbabwe | 530.0 | 0.8% |
| Sierra Leone | 460.0 | 0.7% |
| Ghana | 330.0 | 0.5% |
| Tanzania | 320.0 | 0.5% |
| Other countries | 320.0 | 0.5% |
| United States | Zero | — |
| 全球合计 | 69,000 | 100% |
"未披露"表示美国地质调查局（USGS）为避免泄露单个企业数据而对该数字进行了保密处理——并不意味着数值为零。各国行数之和不一定等于世界合计，原因在于来源对每个数字单独进行四舍五入处理，且并不总是单独列出"其他国家/地区"一行。
储量持有方
Reserves
Reserves thousands of carats 2025
USGS Mineral Commodity Summaries 2026 · 来源 ↗
| 国家/地区 | 储量 | 占全球份额 |
|---|---|---|
| Russia | 750,000 | 37.5% |
| Botswana | 250,000 | 12.5% |
| Congo (Kinshasa) | 150,000 | 7.5% |
| Angola | 150,000 | 7.5% |
| Other countries | 120,000 | 6.0% |
| Canada | 110,000 | 5.5% |
| South Africa | 87,000 | 4.3% |
| Zimbabwe | 56,000 | 2.8% |
| United States | Not applicable | — |
| Ghana | Not applicable | — |
| Lesotho | Not applicable | — |
| Namibia | Not applicable | — |
| Sierra Leone | Not applicable | — |
| Tanzania | Not applicable | — |
| 全球合计 | >2,000,000 | 100% |
来源将此世界总量作为区间值而非精确数值发布，因此末列的份额本身亦为区间值。