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In 1953 the GIA developed its International Diamond Grading System and the "four Cs" (cut, clarity, color, and carat weight) as a standard to compare and evaluate the quality of diamonds. [2] As of 2024, the institute is headquartered in Carlsbad, California, and operates in 13 countries, with 11 campuses, 9 laboratories, and 4 research centers.
The World Diamond Council is an organization representing the entire diamond value chain including representatives from diamond mining, manufacturing, trading and retail. The council was established in July 2000. The purpose was to create a system to keep the supply chain of diamonds as free as possible from conflict diamonds. [1] [2] [3] [4]
The World Diamond Center is home to all of the major diamond mining companies, which discover diamonds for over 1,800 individual diamond dealers across the globe. Other groups that aid in development, protection, and processing of these diamonds include diamond banks, insurance brokers, forwarders, best polishers, and researchers.
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International Gemological Institute (IGI) is a gemological organization which certifies diamond, colored stone and jewelry. It was established in 1975 in Belgium. It was established in 1975 in Belgium.
The Antwerpsche Diamantkring was established in 1928 in Antwerp, Belgium, to become the first diamond bourse worldwide that is dedicated exclusively to rough diamonds trade. [1] It is a member of the World Federation of Diamond Bourses. 85% of the world’s diamond supply is traded in Antwerp, and in particular in the Antwerpsche Diamantkring ...
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