{"schemaVersion":1,"metric":{"id":"usgs-gemstones-reserves-44a13f45","title":"Gemstones · Reserves","unit":"thousands of carats","definition":"Gemstones · Reserves in original thousands of carats units. The publisher's product and statistical category remain distinct from other measures. Values preserve the retained normalized observation and flag; no unit conversion is applied.","source":{"url":"https://www.usgs.gov/centers/national-minerals-information-center/mineral-commodity-summaries","sha256":"77b3942ca9560cd4707d5ed5cf4e9f0e62ee88c9982e4f820f02d0868aabddd8","retrievedAt":"2026-10-04T16:58:17.562Z","retrievalBasis":"library-capture"},"attribution":"USGS Mineral Commodity Summaries. U.S. Geological Survey, 2026, Mineral Commodity Summaries 2026: U.S. Geological Survey. Data release https://doi.org/10.5066/P13XCP3R Native selection from the retained Commodity Origins normalization, formatted by World Signals Monitor. Redistribution authorized by the project owner; original publisher metadata is preserved. No publisher endorsement is implied.","json":"/global-data/usgs-gemstones-reserves-44a13f45.json","csv":"/global-data/usgs-gemstones-reserves-44a13f45.csv","rows":7,"present":7,"countries":7},"rows":[{"country":"AGO","name":"Angola","year":"2025","value":"150000.0","status":"Reported reserves snapshot","note":"{\"chapter\":\"GEMSTONES\",\"section\":\"World Gem-Quality Natural Diamond Mine Production and Reserves\",\"commodity\":\"Gemstones\",\"statistic\":\"Reserves\",\"detail\":\"Reserves\",\"unit\":\"thousands of carats\",\"rounded\":false,\"source_id\":\"usgs_mcs\",\"vintage\":\"MCS 2026\"}","originalRow":896,"originalField":"value"},{"country":"BWA","name":"Botswana","year":"2025","value":"250000.0","status":"Reported reserves snapshot","note":"{\"chapter\":\"GEMSTONES\",\"section\":\"World Gem-Quality Natural Diamond Mine Production and Reserves\",\"commodity\":\"Gemstones\",\"statistic\":\"Reserves\",\"detail\":\"Reserves\",\"unit\":\"thousands of carats\",\"rounded\":false,\"source_id\":\"usgs_mcs\",\"vintage\":\"MCS 2026\"}","originalRow":897,"originalField":"value"},{"country":"CAN","name":"Canada","year":"2025","value":"110000.0","status":"Reported reserves snapshot","note":"{\"chapter\":\"GEMSTONES\",\"section\":\"World Gem-Quality Natural Diamond Mine Production and Reserves\",\"commodity\":\"Gemstones\",\"statistic\":\"Reserves\",\"detail\":\"Reserves\",\"unit\":\"thousands of carats\",\"rounded\":false,\"source_id\":\"usgs_mcs\",\"vintage\":\"MCS 2026\"}","originalRow":898,"originalField":"value"},{"country":"COD","name":"Congo, Dem. Rep.","year":"2025","value":"150000.0","status":"Reported reserves snapshot","note":"{\"chapter\":\"GEMSTONES\",\"section\":\"World Gem-Quality Natural Diamond Mine Production and Reserves\",\"commodity\":\"Gemstones\",\"statistic\":\"Reserves\",\"detail\":\"Reserves\",\"unit\":\"thousands of carats\",\"rounded\":false,\"source_id\":\"usgs_mcs\",\"vintage\":\"MCS 2026\"}","originalRow":899,"originalField":"value"},{"country":"RUS","name":"Russia","year":"2025","value":"750000.0","status":"Reported reserves snapshot","note":"{\"chapter\":\"GEMSTONES\",\"section\":\"World Gem-Quality Natural Diamond Mine Production and Reserves\",\"commodity\":\"Gemstones\",\"statistic\":\"Reserves\",\"detail\":\"Reserves\",\"unit\":\"thousands of carats\",\"rounded\":false,\"source_id\":\"usgs_mcs\",\"vintage\":\"MCS 2026\"}","originalRow":900,"originalField":"value"},{"country":"ZAF","name":"South Africa","year":"2025","value":"87000.0","status":"Reported reserves snapshot","note":"{\"chapter\":\"GEMSTONES\",\"section\":\"World Gem-Quality Natural Diamond Mine Production and Reserves\",\"commodity\":\"Gemstones\",\"statistic\":\"Reserves\",\"detail\":\"Reserves\",\"unit\":\"thousands of carats\",\"rounded\":false,\"source_id\":\"usgs_mcs\",\"vintage\":\"MCS 2026\"}","originalRow":901,"originalField":"value"},{"country":"ZWE","name":"Zimbabwe","year":"2025","value":"56000.0","status":"Reported reserves snapshot","note":"{\"chapter\":\"GEMSTONES\",\"section\":\"World Gem-Quality Natural Diamond Mine Production and Reserves\",\"commodity\":\"Gemstones\",\"statistic\":\"Reserves\",\"detail\":\"Reserves\",\"unit\":\"thousands of carats\",\"rounded\":false,\"source_id\":\"usgs_mcs\",\"vintage\":\"MCS 2026\"}","originalRow":902,"originalField":"value"}]}