{"id":7110,"date":"2020-11-06T10:12:17","date_gmt":"2020-11-06T10:12:17","guid":{"rendered":"http:\/\/www.gemfrance.com\/wpblog\/english\/3-novembre-2020-fermeture-de-la-mine-de-diamants-dargyle\/"},"modified":"2020-11-06T10:16:19","modified_gmt":"2020-11-06T10:16:19","slug":"3-novembre-2020-fermeture-de-la-mine-de-diamants-dargyle","status":"publish","type":"post","link":"https:\/\/www.gemfrance.com\/wpblog\/english\/3-novembre-2020-fermeture-de-la-mine-de-diamants-dargyle\/","title":{"rendered":"3 novembre 2020, fermeture de la mine de diamants d’Argyle"},"content":{"rendered":"

La c\u00e9l\u00e8bre mine Argyle du groupe Rio Tinto, en Australie, a ferm\u00e9 le 3 novembre 2020<\/strong>. <\/span><\/span><\/span><\/h1>\n

Le gisement a \u00e9t\u00e9 d\u00e9couvert en 1979\u00a0.<\/span><\/span><\/span><\/p>\n

Une production alluviale a d\u00e9but\u00e9 en 1983\u00a0, puis en mine \u00e0 ciel ouvert en 1985. L\u2019extraction s\u2019est faite totalement en galeries depuis 2013.<\/span><\/span><\/span><\/p>\n

Cette mine est situ\u00e9e dans la r\u00e9gion du Kimberley, \u00e0 3000km au nord de Perth. Son d\u00e9mant\u00e8lement devrait prendre cinq \u00e0 10 ans.<\/span><\/span><\/span><\/p>\n

Cette mine doit sa c\u00e9l\u00e9brit\u00e9 par sa production de 90\u00a0% des diamants roses au Monde depuis 37 ans. Elle a aussi produit des diamants verts, bleus et rouges.<\/span><\/span><\/span><\/p>\n

Malgr\u00e9 les prix tr\u00e8s \u00e9lev\u00e9s de ses tr\u00e8s rares diamants roses et rouges, la production globale n\u2019y est plus globalement rentable.<\/span><\/span><\/span><\/p>\n

Le prix des diamants roses atteint des sommets. Nul doute que l\u2019arr\u00eat de de la production va inciter des collectionneurs tr\u00e8s fortun\u00e9s \u00e0 ench\u00e9rir encore plus pour acqu\u00e9rir ces raret\u00e9s\u00a0.<\/span><\/span><\/span><\/p>\n

Le Pink Legacy, diamant rose de pr\u00e8s de 19 carats, a ainsi atteint la valeur record de 50 millions de dollars lors d\u2019une ench\u00e8re en 2018.<\/span><\/span><\/span><\/strong><\/span><\/span><\/span><\/p>\n

La production totale de la mine pendant ces 37 ann\u00e9es a \u00e9t\u00e9 de 850 millions de carats de diamant brut, mais seulement 5\u00a0% \u00e9taient de qualit\u00e9 gemme.<\/span><\/span><\/span><\/p>\n

La quantit\u00e9 de diamants roses de belle qualit\u00e9 t a \u00e9t\u00e9 tr\u00e8s faible. Leur prix a \u00e9t\u00e9 multipli\u00e9 par 5 en 20 ans.<\/span><\/span><\/span><\/p>\n

Les diamants roses de la mine d\u2019Argyle ont toujours \u00e9t\u00e9 vendus d\u00e9j\u00e0 taill\u00e9s et \u00e0 seulement 11 partenaires s\u00e9lectionn\u00e9s, <\/span><\/span><\/span>quatre fois par an.<\/span><\/span><\/span><\/p>\n

Chaque ann\u00e9e, une vente annuelle \u00e9tait consacr\u00e9e \u00e0 la vente des 50 \u00e0 60 plus intenses diamants roses, mais aussi rouges et violets.<\/span><\/span><\/span><\/p>\n

L<\/span><\/span><\/span>a particularit\u00e9 g\u00e9ologique de cette mine est l\u2019exploitation d\u2019une chemin\u00e9e de Lampro\u00efte alors que classiquement les autres mines exploitent des gisements kimberlitiques.<\/span><\/span><\/span><\/p>\n

Le diamant n\u2019est pas la pierre pr\u00e9cieuse la plus rare. La raret\u00e9 du rubis, en qualit\u00e9 gemme est bien plus importante\u00a0.<\/span><\/span><\/span><\/p>\n

L\u2019arr\u00eat de la production de la mine d\u2019Argyle provoquera une baisse <\/span><\/span><\/span>de 10% du volume mondia<\/span><\/span><\/span>l<\/span><\/span><\/span>; <\/span><\/span><\/span>de quoi \u00eatre un facteur susceptible de donner un coup de pouce au march\u00e9 du diamant de joaillerie.<\/span><\/span><\/span><\/p>\n

Selon \u00ables sp\u00e9cialistes\u00bb, cela permettra d\u2019absorber l\u2019exc\u00e9dent de diamants de joaillerie en deux ann\u00e9es.<\/span><\/span><\/span><\/p>\n\n","protected":false},"excerpt":{"rendered":"

Cette mine s’est rendue c\u00e9l\u00e8bre pour ses rares diamants roses, rouges, verts et bleus<\/p>\n","protected":false},"author":4,"featured_media":7111,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=\/wp\/v2\/posts\/7110"}],"collection":[{"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7110"}],"version-history":[{"count":1,"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=\/wp\/v2\/posts\/7110\/revisions"}],"predecessor-version":[{"id":7115,"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=\/wp\/v2\/posts\/7110\/revisions\/7115"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=\/wp\/v2\/media\/7111"}],"wp:attachment":[{"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7110"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gemfrance.com\/wpblog\/english\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}