{"id":8168,"date":"2025-07-04T14:52:50","date_gmt":"2025-07-04T12:52:50","guid":{"rendered":"http:\/\/dalloz-stones.com\/?p=8168"},"modified":"2025-07-04T14:52:53","modified_gmt":"2025-07-04T12:52:53","slug":"corindons-spinelles-notre-brut-francais","status":"publish","type":"post","link":"https:\/\/dalloz-stones.com\/fr\/corindons-spinelles-notre-brut-francais\/","title":{"rendered":"Corindons et spinelles : zoom sur la fabrication de notre brut fran\u00e7ais"},"content":{"rendered":"<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"240\" src=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/HEADER-RSA-1024x240.jpg\" alt=\"\" class=\"wp-image-8182\" srcset=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/HEADER-RSA-1024x240.jpg 1024w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/HEADER-RSA-300x70.jpg 300w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/HEADER-RSA-768x180.jpg 768w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/HEADER-RSA-1536x360.jpg 1536w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/HEADER-RSA.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><div class=\"wp-block-columns has-2-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns has-2-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\"><p><strong>Longtemps confondus car provenant des m\u00eame gisements, spinelles et <em>corindons<\/em>&nbsp;(famille des&nbsp;<em>rubis<\/em>&nbsp;et&nbsp;des <em>saphirs<\/em>) fascinent depuis des mill\u00e9naires.&nbsp;<\/strong><\/p>\n\n<p>Nous sommes capables de cr\u00e9er leurs \u00e9quivalents synth\u00e9tiques en laboratoire depuis 1902. Nous le devons \u00e0 un chimiste fran\u00e7ais, Auguste Verneuil, qui donnera son nom \u00e0 leur m\u00e9thode de fabrication&nbsp;: la m\u00e9thode Verneuil.<\/p>\n\n<p><strong>Notre brut fran\u00e7ais chez Dalloz Stones &amp; Rough, pousse dans une usine de Grenoble. <\/strong>Cette magie s\u2019op\u00e8re chez RSA Le Rubis, un nom synonyme d&rsquo;expertise in\u00e9gal\u00e9e pour de nombreuses grandes maisons horlog\u00e8res suisses. Ils sont connus pour produire des cristaux d\u2019excellence. Ils nous ont fait l\u2019honneur de nous ouvrir leurs portes pour nous d\u00e9voiler leur savoir-faire. <\/p>\n\n<p>Rejoignez-nous dans cette exploration et d\u00e9couvrez l&rsquo;univers passionnant de la fabrication des pierres synth\u00e9tiques.<\/p><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VISUEL-NL-ROSE-FIRE-BLUE-1024x1024.jpg\" alt=\"Corindons et spinelles\" class=\"wp-image-8183\" style=\"width:250px;height:250px\" srcset=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VISUEL-NL-ROSE-FIRE-BLUE-1024x1024.jpg 1024w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VISUEL-NL-ROSE-FIRE-BLUE-300x300.jpg 300w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VISUEL-NL-ROSE-FIRE-BLUE-150x150.jpg 150w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VISUEL-NL-ROSE-FIRE-BLUE-768x768.jpg 768w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VISUEL-NL-ROSE-FIRE-BLUE.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div><\/div><div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><h2 class=\"wp-block-heading\">1) La m\u00e9thode Verneuil pour cr\u00e9er des corindons et des spinelles<\/h2><p>La diversit\u00e9 des m\u00e9thodes de formation des bruts de corindons et spinelles refl\u00e8te l&rsquo;ampleur de l&rsquo;engagement des lapidaires en mati\u00e8re d\u2019innovation technique : m\u00e9thode de Czochralski, m\u00e9thode de flux, m\u00e9thode de flux bouillant, m\u00e9thode hydrothermale\u2026 <\/p><p>Parmi ces techniques, la m\u00e9thode de Verneuil se distingue car c\u2019est<strong> le premier processus commercialement viable de fabrication de pierres pr\u00e9cieuses synth\u00e9tiques.<\/strong><\/p><div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><div class=\"wp-block-columns has-2-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns has-2-columns-is-layout-flex\"><div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<figure class=\"wp-block-image alignright size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VERNEUIL-1024x1024.jpg\" alt=\"\" class=\"wp-image-8193\" style=\"width:300px;height:300px\" srcset=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VERNEUIL-1024x1024.jpg 1024w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VERNEUIL-300x300.jpg 300w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VERNEUIL-150x150.jpg 150w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VERNEUIL-768x768.jpg 768w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/VERNEUIL.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\"><h3 class=\"wp-block-heading has-text-align-left has-text-color\" style=\"color:#e5cdb6;font-size:25px\">a) Explication du proc\u00e9d\u00e9<\/h3>\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p>L&rsquo;une des m\u00e9thodes les plus embl\u00e9matiques pour la fabrication des pierres synth\u00e9tiques, notamment des corindons et des spinelles, est <strong>le proc\u00e9d\u00e9 de Verneuil, \u00e9galement connu sous le nom de \u201cFlame Fusion Process\u201d<\/strong>, une m\u00e9thode r\u00e9volutionnaire d\u00e9velopp\u00e9e en 1902.<\/p>\n\n<p>Le proc\u00e9d\u00e9 de Verneuil consiste en <strong>une fusion minutieuse de poudre d&rsquo;alumine \u00e0 des temp\u00e9ratures extr\u00eamement \u00e9lev\u00e9es (avoisinant les 2000 C\u00b0)<\/strong>. L&rsquo;alumine en poudre est chauff\u00e9e \u00e0 un point tel qu&rsquo;elle passe de l\u2019\u00e9tat de solide \u00e0 l\u2019\u00e9tat liquide puis vient se d\u00e9poser et cristallise au contact d\u2019un germe pr\u00e9sent sur un support.<\/p>\n\n<p>Ce processus, en apparence simple, exige en r\u00e9alit\u00e9<strong> un contr\u00f4le extr\u00eamement pr\u00e9cis des conditions de croissance, <\/strong>sp\u00e9cifiquement de la temp\u00e9rature et de la quantit\u00e9 de poudre d\u00e9pos\u00e9e. Ces param\u00e8tres sont d\u00e9terminants pour la qualit\u00e9 finale du cristal.<\/p>\n\n<p>Une fois que le cristal a atteint la taille souhait\u00e9e, il est soigneusement refroidi, ce qui permet d&rsquo;obtenir un corindon ou un spinelle synth\u00e9tique de haute qualit\u00e9.<\/p><\/div><\/div><h3 class=\"wp-block-heading has-text-align-left has-text-color\" style=\"color:#e5cdb6;font-size:25px\">b) Un proc\u00e9d\u00e9 gourmand en \u00e9nergie<\/h3><div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><p>Le proc\u00e9d\u00e9 Verneuil, qui est \u00e0 la base de la cr\u00e9ation de corindons et de spinelles synth\u00e9tiques, n\u00e9cessite une quantit\u00e9 significative d&rsquo;\u00e9nergie pour amener les fours \u00e0 une temp\u00e9rature extr\u00eamement \u00e9lev\u00e9e et suffisante pour faire fondre la poudre d&rsquo;alumine. <\/p><p>Plusieurs \u00e9nergies peuvent \u00eatre utilis\u00e9es dont la plupart du temps des \u00e9nergies fossiles. <strong>RSA le rubis, a pris le parti de se diff\u00e9rencier en utilisant des \u00e9nergies propres, renouvelables ou recycl\u00e9es.<\/strong><\/p><div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><h2 class=\"wp-block-heading\">2) Le brut made in RSA : durable et de haute qualit\u00e9<\/h2><div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><p>Fond\u00e9e au d\u00e9but du XXe si\u00e8cle, RSA a rapidement acquis une r\u00e9putation d&rsquo;expertise in\u00e9gal\u00e9e dans le processus de cristallisation et elle continue d\u2019investir dans ses installations et ses process afin de <strong>proposer des produits de haute qualit\u00e9, \u00e9thiques et durables.<\/strong><\/p><div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><h3 class=\"wp-block-heading has-text-align-left has-text-color\" style=\"color:#e5cdb6;font-size:25px\">a) Du brut produit avec des \u00e9nergies renouvelables<\/h3><div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><p>Rappelons-le, il est n\u00e9cessaire de<strong> cr\u00e9er des gaz sp\u00e9cifiques, \u00e0 savoir de l&rsquo;hydrog\u00e8ne et de l&rsquo;oxyg\u00e8ne, pour \u00e9laborer les conditions n\u00e9cessaires<\/strong> \u00e0 la croissance cristalline.<\/p><div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><div class=\"wp-block-columns has-2-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns has-2-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\"><h4 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-medium-font-size\"><em>1. L&rsquo;\u00e9lectrolyse<\/em><\/h4>\n\n<p>L&rsquo;\u00e9lectrolyse est un processus qui impliqu<strong>e la dissociation de la mol\u00e9cule d&rsquo;eau (H2O) en ses \u00e9l\u00e9ments constitutifs, soit l&rsquo;hydrog\u00e8ne (H2) et l&rsquo;oxyg\u00e8ne (O2), <\/strong>\u00e0 l&rsquo;aide de l&rsquo;\u00e9lectricit\u00e9.<\/p>\n\n<p>Pour ce faire, RSA Le Rubis tire parti de l\u2019\u00e9nergie \u00e9lectrique renouvelable produite par les barrages situ\u00e9s aux environs de son usine, \u00e0 Grenoble, en France. <\/p>\n\n<p>Les gaz sont ensuite achemin\u00e9s vers les circuits de production.<\/p>\n\n<p><strong>La synth\u00e8se par \u00e9lectrolyse a la particularit\u00e9 d&rsquo;assurer la production de gaz de tr\u00e8s bonne qualit\u00e9 et sans polluant<\/strong>, ce qui permet \u00e9galement de produire des mati\u00e8res de haute puret\u00e9. C\u2019est la raison pour laquelle RSA Le Rubis s\u2019est tourn\u00e9 vers cette m\u00e9thode.<\/p>\n\n<p>L&rsquo;\u00e9lectrolyse est bien plus qu&rsquo;un simple processus de production de gaz. C&rsquo;est<strong> le garant de la puret\u00e9, de la qualit\u00e9 et de la durabilit\u00e9 dans la fabrication de corindons et de spinelles synth\u00e9tiques.<\/strong><\/p><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ELECTROLYSE-1024x1024.jpg\" alt=\"\" class=\"wp-image-8194\" style=\"width:300px;height:300px\" srcset=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ELECTROLYSE-1024x1024.jpg 1024w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ELECTROLYSE-300x300.jpg 300w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ELECTROLYSE-150x150.jpg 150w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ELECTROLYSE-768x768.jpg 768w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ELECTROLYSE.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div><\/div><div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><div class=\"wp-block-columns has-1-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns has-1-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><h4 class=\"wp-block-heading has-text-align-left has-medium-font-size\"><em>2. Le recyclage<\/em><\/h4>\n\n<p>La seconde source d\u2019\u00e9nergie consiste \u00e0 recycler les rejets d&rsquo;usines chimiques. Pour compl\u00e9ter leurs besoins en gaz, RSA Le Rubis collaborent ainsi avec des industriels comme Arkema afin de r\u00e9cup\u00e9rer leur hydrog\u00e8ne. <\/p>\n\n<p>C\u2019est de cette fa\u00e7on qu\u2019aucune \u00e9nergie fossile n\u2019est utilis\u00e9e par RSA Le Rubis pour fabriquer de l\u2019hydrog\u00e8ne, ce qui permet d\u2019assurer que les pierres fabriqu\u00e9es sont 100% issues d\u2019\u00e9nergies renouvelables.<\/p><\/div><\/div><h3 class=\"wp-block-heading has-text-align-left has-text-color\" style=\"color:#e5cdb6;font-size:25px\">b) Des mati\u00e8res premi\u00e8res fabriqu\u00e9es en interne<\/h3><div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><p>L&rsquo;excellence des bruts produits par RSA Le Rubis repose \u00e9galement sur <strong>la qualit\u00e9 des mati\u00e8res premi\u00e8res qu\u2019ils utilisent.<\/strong><\/p><div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><div class=\"wp-block-columns has-2-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns has-2-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\"><h4 class=\"wp-block-heading has-text-align-left has-medium-font-size\"><em>1. La mati\u00e8re premi\u00e8re de l&rsquo;alumine : la poudre d&rsquo;alun<\/em><\/h4>\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p>La qualit\u00e9 et la puret\u00e9 de la poudre d&rsquo;alun est un \u00e9l\u00e9ment fondamental pour le processus de fusion de Verneuil, c\u2019est la raison pour laquelle RSA Le Rubis a d\u00e9cid\u00e9 de la produire en interne.<\/p>\n\n<p>La poudre d\u2019alun qu&rsquo;ils utilisent est <strong>le fruit d&rsquo;un processus m\u00e9ticuleux qui a lieu en circuit ferm\u00e9 au sein de leur usine.<\/strong><\/p>\n\n<p>Tout d\u2019abord, ils produisent un double sel auquel ils font ensuite subir un processus de calcination, ce qui le transformera en alumine. <\/p>\n\n<p>La poudre d\u2019alun produite par RSA le Rubis est<strong> d\u2019une qualit\u00e9 bien sup\u00e9rieure \u00e0 celle qui peut \u00eatre utilis\u00e9e dans l&rsquo;industrie cosm\u00e9tique <\/strong>: c\u2019est un sel d\u2019alun.<\/p><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ALUMINE-2-1024x1024.jpg\" alt=\"\" class=\"wp-image-8197\" style=\"width:250px;height:250px\" srcset=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ALUMINE-2-1024x1024.jpg 1024w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ALUMINE-2-300x300.jpg 300w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ALUMINE-2-150x150.jpg 150w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ALUMINE-2-768x768.jpg 768w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/ALUMINE-2.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div><\/div><div class=\"wp-block-columns has-2-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns has-2-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\"><h4 class=\"wp-block-heading has-text-align-left has-medium-font-size\"><em>2. Le dopage de l&rsquo;alumine<\/em><\/h4>\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p>C\u2019est \u00e0 partir de cette poudre d\u2019alun qu\u2019ils vont fabriquer des cristaux de sel. Ensuite,<strong> ils les \u201cdoperont\u201d ou non avec des \u00e9l\u00e9ments suppl\u00e9mentaires : <\/strong>pour les corindons, avec du fer ou du chrome et pour les spinelles, notamment avec de la magn\u00e9sie.<\/p>\n\n<p>Soucieuse de garantir la fiabilit\u00e9 et la stabilit\u00e9 de leur qualit\u00e9 de leurs cristaux, l\u2019entreprise a donc pris le parti d&rsquo;int\u00e9grer et de contr\u00f4ler l&rsquo;ensemble de la cha\u00eene de production en produisant sa propre mati\u00e8re premi\u00e8re.<\/p>\n\n<p>C\u2019est ainsi que RSA Le Rubis s&rsquo;efforce continuellement de maintenir une cha\u00eene d&rsquo;approvisionnement transparente, avec un accent particulier sur la puret\u00e9 et la s\u00e9curit\u00e9 des mati\u00e8res premi\u00e8res utilis\u00e9es.<\/p><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><figure class=\"wp-block-image aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/POUDRE-REACH-1024x1024.jpg\" alt=\"Poudre d'alun pour la fabrication des Corindons et spinelles\" class=\"wp-image-8199\" style=\"width:250px;height:250px\" srcset=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/POUDRE-REACH-1024x1024.jpg 1024w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/POUDRE-REACH-300x300.jpg 300w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/POUDRE-REACH-150x150.jpg 150w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/POUDRE-REACH-768x768.jpg 768w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/POUDRE-REACH.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div><\/div><div style=\"height:64px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><div class=\"wp-block-columns has-2-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns has-2-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"350\" height=\"750\" src=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/10\/VISUEL-FOUR-ALUMINE-RSA.jpg\" alt=\"\" class=\"wp-image-8219\" style=\"aspect-ratio:3\/4;object-fit:contain;width:432px;height:auto\" srcset=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/10\/VISUEL-FOUR-ALUMINE-RSA.jpg 350w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/10\/VISUEL-FOUR-ALUMINE-RSA-140x300.jpg 140w\" sizes=\"(max-width: 350px) 100vw, 350px\" \/><\/figure><\/div>\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div style=\"height:158px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"has-text-align-center\">Merci \u00e0 RSA Le Rubis de nous avoir ouvert les portes de son usine de production. Vous en savez d\u00e9sormais plus sur le processus de fabrication des spinelles et des corindons. Si le sujet vous int\u00e9resse, n\u2019h\u00e9site pas \u00e0 aller lire notre article sur le cubic zirconia ou encore sur les \u00e9meraudes synth\u00e9tiques.<\/p>\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><\/div><\/div><div style=\"height:64px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div><div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\"><div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background has-custom-font-size wp-element-button\" href=\"https:\/\/dalloz-stones.com\/fr\/boutique\/?ixwpst[pa_eco-grandit][]=143&amp;title=1&amp;excerpt=1&amp;content=1&amp;categories=1&amp;attributes=1&amp;tags=1&amp;sku=1&amp;ixwpsf[taxonomy][pa_stone-type][show]=all&amp;ixwpsf[taxonomy][pa_stone-type][multiple]=1&amp;ixwpsf[taxonomy][pa_stone-type][filter]=1&amp;ixwpsf[taxonomy][pa_material][show]=all&amp;ixwpsf[taxonomy][pa_material][multiple]=1&amp;ixwpsf[taxonomy][pa_material][filter]=1&amp;ixwpsf[taxonomy][pa_shape][show]=all&amp;ixwpsf[taxonomy][pa_shape][multiple]=0&amp;ixwpsf[taxonomy][pa_shape][filter]=1&amp;ixwpsf[taxonomy][pa_color][show]=all&amp;ixwpsf[taxonomy][pa_color][multiple]=0&amp;ixwpsf[taxonomy][pa_color][filter]=1&amp;ixwpsf[taxonomy][pa_dalloz-exclusivity][show]=all&amp;ixwpsf[taxonomy][pa_dalloz-exclusivity][multiple]=1&amp;ixwpsf[taxonomy][pa_dalloz-exclusivity][filter]=1&amp;ixwpsf[taxonomy][pa_eco-grandit][show]=all&amp;ixwpsf[taxonomy][pa_eco-grandit][multiple]=1&amp;ixwpsf[taxonomy][pa_eco-grandit][filter]=1&amp;ixwpsf[taxonomy][pa_percage][show]=all&amp;ixwpsf[taxonomy][pa_percage][multiple]=1&amp;ixwpsf[taxonomy][pa_percage][filter]=1\" style=\"background-color:#4e5f4c;font-size:22px\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>D\u00e9couvrir nos pierres made in france<\/strong><\/a><\/div><\/div><figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"240\" src=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/FOOTER-BRUTS-1024x240.jpg\" alt=\"Corindons et spinelles\" class=\"wp-image-8184\" srcset=\"https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/FOOTER-BRUTS-1024x240.jpg 1024w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/FOOTER-BRUTS-300x70.jpg 300w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/FOOTER-BRUTS-768x180.jpg 768w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/FOOTER-BRUTS-1536x360.jpg 1536w, https:\/\/dalloz-stones.com\/app\/uploads\/2023\/09\/FOOTER-BRUTS.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>Longtemps confondus car provenant des m\u00eame gisements, spinelles et corindons&nbsp;(famille des&nbsp;rubis&nbsp;et&nbsp;des saphirs) fascinent depuis des mill\u00e9naires.&nbsp; Nous sommes capables de cr\u00e9er leurs \u00e9quivalents synth\u00e9tiques en laboratoire depuis 1902. Nous le devons \u00e0 un chimiste fran\u00e7ais, Auguste Verneuil, qui donnera son nom \u00e0 leur m\u00e9thode de fabrication&nbsp;: la m\u00e9thode Verneuil. Notre brut fran\u00e7ais chez Dalloz Stones [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":66,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[496],"tags":[],"class_list":["post-8168","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fabrication"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Corindons et spinelles : notre brut fran\u00e7ais<\/title>\n<meta name=\"description\" content=\"Corindons et spinelles, notre brut fran\u00e7ais, pousse chez RSA Le Rubis, Ils nous ont ouvert leurs portes pour nous d\u00e9voiler leur savoir-faire.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dalloz-stones.com\/fr\/corindons-spinelles-notre-brut-francais\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Corindons et spinelles : notre brut fran\u00e7ais\" \/>\n<meta property=\"og:description\" content=\"Corindons et spinelles, notre brut fran\u00e7ais, pousse chez RSA Le Rubis, Ils nous ont ouvert leurs portes pour nous d\u00e9voiler leur savoir-faire.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dalloz-stones.com\/fr\/corindons-spinelles-notre-brut-francais\/\" \/>\n<meta property=\"og:site_name\" content=\"Dalloz stones &amp; 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