The United States imported some 195 million carats of synthetic diamonds, also known as lab diamonds, from China in 2021. That year, the U.S. imported a total of 257 million carats of lab diamonds from more than 14 countries, but China was by far the largest source of U.S. imports.
Synthetic diamonds are artificially produced, often in laboratories, which is why they are also known as lab diamonds. Two of the most common production methods are through high-pressures and high-temperatures (HPHT) as well as through the formation of crystals through chemical vapor deposition (CVD).
Imports of synthetic diamonds to the United States in 2021, by country of origin
(in 1,000 carats)
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US Geological Survey. (September 24, 2024). Imports of synthetic diamonds to the United States in 2021, by country of origin (in 1,000 carats) [Graph]. In Statista. Retrieved January 05, 2025, from https://www.statista.com/statistics/1427529/us-synthetic-diamond-imports-by-country-of-origin/
US Geological Survey. "Imports of synthetic diamonds to the United States in 2021, by country of origin (in 1,000 carats)." Chart. September 24, 2024. Statista. Accessed January 05, 2025. https://www.statista.com/statistics/1427529/us-synthetic-diamond-imports-by-country-of-origin/
US Geological Survey. (2024). Imports of synthetic diamonds to the United States in 2021, by country of origin (in 1,000 carats). Statista. Statista Inc.. Accessed: January 05, 2025. https://www.statista.com/statistics/1427529/us-synthetic-diamond-imports-by-country-of-origin/
US Geological Survey. "Imports of Synthetic Diamonds to The United States in 2021, by Country of Origin (in 1,000 Carats)." Statista, Statista Inc., 24 Sep 2024, https://www.statista.com/statistics/1427529/us-synthetic-diamond-imports-by-country-of-origin/
US Geological Survey, Imports of synthetic diamonds to the United States in 2021, by country of origin (in 1,000 carats) Statista, https://www.statista.com/statistics/1427529/us-synthetic-diamond-imports-by-country-of-origin/ (last visited January 05, 2025)
Imports of synthetic diamonds to the United States in 2021, by country of origin (in 1,000 carats) [Graph], US Geological Survey, September 24, 2024. [Online]. Available: https://www.statista.com/statistics/1427529/us-synthetic-diamond-imports-by-country-of-origin/
