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1870-2004ǯ¤ÏGIA Gems & Gemology 2007 Summer GLOBAL ROUGH DIAMOND PRODUCTION SINCE 1870¤«¤é¥È¥ì¡¼¥¹
2005-2019ǯ¤ÏRough Diamonds Production 2005-2019 by BizVibe
2020-2021ǯ¤ÏGlobal Diamond Industry 2021-2022 by BAIN & COMPANY