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https://en.wikipedia.org/wiki/World_Federation_of_Diamond_Bourses
http://www.londondiamondbourse.com/
http://diamantkring.org/
https://en.wikipedia.org/wiki/List_of_commodities_exchanges
https://en.wikipedia.org/wiki/Bharat_Diamond_Bourse
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Link
Stock and Financial markets
The ABC of the European stock and financial markets
Stock Exchanges and other Exchanges
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