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The color of a diamond also plays a role in its value, with colorless diamonds given the greatest value. There are pink, yellow, blue and even black diamonds. Although these are less common than ...
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. Laboratory-grown diamonds had dropped by 74% since 2020. Prices were expected to continue decreasing.
Each grid has the clarity options on the horizontal line and the color options on the vertical line. In order to calculate the price of a diamond according to the Rapaport Price List, you need to know the size, color and clarity of the diamond. The price listed based on this information is in hundreds of dollars per carat. [3]
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:
Leaders of states in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their natural resources, history, tourism, etc.
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Diamond is extremely strong owing to its crystal structure, known as diamond cubic, in which each carbon atom has four neighbors covalently bonded to it. Bulk cubic boron nitride (c-BN) is nearly as hard as diamond. Diamond reacts with some materials, such as steel, and c-BN wears less when cutting or abrading such material. [4]