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Per-kilogram prices of some synthetic radioisotopes range to trillions of dollars. ... ( mg / kg ) Price [7] Year Source Notes USD/kg ... (2.216 × 10 14 kg) 24 ...
The largest markets are USA (about half), China and India. [3] As of 2017 larger diamonds had appreciated in value since 2008 more than smaller ones. [4] [5] In early 2025 diamond prices had dropped significantly from a peak in 2022; prices of natural gems in shops dropped by 26% by the beginning of 2025.
The following is a list of countries and territories by diamond exports. Data is for 2012, 2015, 2016 and 2023 in billions of United States dollars, as reported by The Observatory of Economic Complexity and the International Trade Centre. Currently the countries exporting over one billion dollars in 2023 are listed:
Apollo Diamond (defunct, assets sold in 2011 to Scio Diamond) [1] ALTR Created Diamonds [2] De Beers (Lightbox) [3] Diamond Foundry [4] Gemesis (now a non-producing reseller called Pure Grown Diamonds) [5] Scio Diamond Technology Corporation [6] (colorless) Tairus [7] WD Lab Grown Diamonds [8]
Eventually sold to I. K. Gulland of London, where it was broken up into small pieces as industrial diamond drills. [7] 3106.75: Cullinan Diamond South Africa: Premier Mine: 1905: British Crown (I and II) and Charles III (III–IX) The largest gem-quality diamond ever discovered. 2492 [8] Motswedi Botswana: Karowe Mine [9] 2024: Lucara Diamond ...
Diamond mining in India extends back into antiquity. From ancient times, India was the source of nearly all the world's known diamonds, and until diamonds were discovered in Brazil in 1726, India was the only place where diamonds were mined. India has not been a major diamond-producing country since the 1900s, but diamond mining continues.
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The value of a diamond gemstone depends upon colour and quality, as well as weight. As of April 2024 the average price per carat of diamonds of between 1.00 and 1.49 carats was US$4,448. [48] The price of diamonds dropped significantly from a peak in 2022; prices of natural gems in shops dropped by 26% by the beginning of 2025.