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Alrosa dévoile le plus grand diamant de l’histoire de la Russie

La société russe Alrosa, leader mondial de l’extraction de diamants, a annoncé l’achèvement du polissage et de la taille du plus grand diamant de l’histoire de la Russie, une pierre rare d’une riche couleur jaune vif miel-or pesant plus de 100 carats. La pierre brute, pesant à l’origine plus de 200 carats, a été extraite …


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