A yelow diamond weighing 20.69 carats is displayed during a media preview organized by Russian diamond producer ALROSA in Moscow, Russia, Feb. 13, 2019. ALROSA showed its biggest coloured gems during the preview. (Xinhua/Evgeny Sinitsyn)
Media preview organized by Russian diamond producer held in Moscow
Source: Xinhua| 2019-02-14 10:59:53|Editor: Li Xia
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