{"id":6768,"date":"2020-03-18T14:04:55","date_gmt":"2020-03-18T12:04:55","guid":{"rendered":"https:\/\/www.cookson-clal.com\/le-blog\/?p=6768"},"modified":"2025-08-04T17:02:27","modified_gmt":"2025-08-04T15:02:27","slug":"echelle-de-mohs-durete-des-mineraux","status":"publish","type":"post","link":"https:\/\/www.cookson-clal.com\/le-blog\/echelle-de-mohs-durete-des-mineraux\/","title":{"rendered":"L\u2019\u00e9chelle de Mohs : la duret\u00e9 des min\u00e9raux"},"content":{"rendered":"\r\n<p>IInvent\u00e9e en 1813 par le min\u00e9ralogiste Friedrich Mohs, l&rsquo;<strong>\u00e9chelle de Mohs<\/strong> permet de mesurer la duret\u00e9 des m\u00e9taux. Cet outil indispensable va vous permettre de conna\u00eetre la r\u00e9sistance des pierres que vous travaillez.<\/p>\r\n\r\n\r\n\r\n<h2 style=\"color: #22398c;\">\u00c0 quoi correspond l\u2019\u00e9chelle de Mohs ?<\/h2>\r\n\r\n\r\n\r\n<p>L&rsquo;\u00e9chelle de Mohs se pr\u00e9sente sous forme de tableau. Ce tableau met en avant <strong>la tol\u00e9rance d&rsquo;une pierre pr\u00e9cieuse ou d&rsquo;un min\u00e9ral aux rayures, aux dommages g\u00e9n\u00e9raux.<\/strong><\/p>\r\n\r\n\r\n\r\n<p>L\u2019\u00e9chelle est bas\u00e9e sur la capacit\u00e9 d&rsquo;un mat\u00e9riau (dont la duret\u00e9 est connue) \u00e0 rayer et endommager un autre. Par exemple, si un min\u00e9ral nouvellement d\u00e9couvert est ray\u00e9 et endommag\u00e9 par l&rsquo;aigue-marine (duret\u00e9 7,5 &#8211; 8) mais endommag\u00e9e par l&rsquo;am\u00e9thyste (duret\u00e9 7), sa duret\u00e9 \u00e0 l&rsquo;\u00e9chelle de Mohs se situerait entre 7 et 7,5.<\/p>\r\n\r\n\r\n\r\n<p>Plus le chiffre est \u00e9lev\u00e9, plus la pierre est r\u00e9sistante.<\/p>\r\n\r\n\r\n\n<table id=\"tablepress-1\" class=\"tablepress tablepress-id-1\">\n<thead>\n<tr class=\"row-1 odd\">\n\t<th class=\"column-1\">Min\u00e9ral<\/th><th class=\"column-2\">Echelle de duret\u00e9<\/th><th class=\"column-3\">Comparaison<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-hover\">\n<tr class=\"row-2 even\">\n\t<td class=\"column-1\">Diamant<\/td><td class=\"column-2\">10<\/td><td class=\"column-3\">Rayable par un autre diamant<\/td>\n<\/tr>\n<tr class=\"row-3 odd\">\n\t<td class=\"column-1\">Corindon<\/td><td class=\"column-2\">9<\/td><td class=\"column-3\">Rayable au carbure de silicium<\/td>\n<\/tr>\n<tr class=\"row-4 even\">\n\t<td class=\"column-1\">Topaze<\/td><td class=\"column-2\">8<\/td><td class=\"column-3\">Rayable par le carbure de tungst\u00e8ne<\/td>\n<\/tr>\n<tr class=\"row-5 odd\">\n\t<td class=\"column-1\">Quartz<\/td><td class=\"column-2\">7<\/td><td class=\"column-3\">Qui raye une vitre<\/td>\n<\/tr>\n<tr class=\"row-6 even\">\n\t<td class=\"column-1\">Orthose<\/td><td class=\"column-2\">6<\/td><td class=\"column-3\">Rayable avec une lime<\/td>\n<\/tr>\n<tr class=\"row-7 odd\">\n\t<td class=\"column-1\">Apatite<\/td><td class=\"column-2\">5<\/td><td class=\"column-3\">Rayable avec un couteau<\/td>\n<\/tr>\n<tr class=\"row-8 even\">\n\t<td class=\"column-1\">Fluorite<\/td><td class=\"column-2\">4<\/td><td class=\"column-3\">Rayable facilement avec un couteau<\/td>\n<\/tr>\n<tr class=\"row-9 odd\">\n\t<td class=\"column-1\">Calcite<\/td><td class=\"column-2\">3<\/td><td class=\"column-3\">Rayable avec une pi\u00e8ce de monnaie<\/td>\n<\/tr>\n<tr class=\"row-10 even\">\n\t<td class=\"column-1\">Gypse<\/td><td class=\"column-2\">2<\/td><td class=\"column-3\">Rayable avec un ongle<\/td>\n<\/tr>\n<tr class=\"row-11 odd\">\n\t<td class=\"column-1\">Talc<\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Friable sous l'ongle<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-1 from cache -->\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" style=\"color: #22398c;\">Comment utiliser l&rsquo;\u00e9chelle de Mohs pour choisir les pierres pr\u00e9cieuses ?<\/h2>\r\n\r\n\r\n\r\n<p>En tant que bijoutier, il vous faut prendre en compte certains \u00e9l\u00e9ments afin de choisir des pierres pour vos travaux :<\/p>\r\n\r\n\r\n\r\n<ul>\r\n<li>Est-ce que le bijou sera port\u00e9 quotidiennement ? (type bague de fian\u00e7ailles)<\/li>\r\n<li>Est-ce que le bijoux que vous allez cr\u00e9er sera port\u00e9 moins souvent ?<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>En fonction de cela, vous allez vous orienter vers une pierre pr\u00e9cieuse avec une duret\u00e9 et une durabilit\u00e9 particuli\u00e8re.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" style=\"color: #f89406;\">Pierres pr\u00e9cieuses pour un usage quotidien<\/h3>\r\n\r\n\r\n\r\n<p>Si vous souhaitez cr\u00e9er des bijoux qui seront port\u00e9s quotidiennement, notamment les bagues de fian\u00e7ailles, il faudra vous tourner vers les pierres pr\u00e9cieuses qui ont une duret\u00e9 \u00e9lev\u00e9 ainsi qu&rsquo;une structure interne robuste.<\/p>\r\n\r\n\r\n\r\n<p>Pour les bagues de fian\u00e7ailles, ce sont les diamants qui sont le plus souvent utilis\u00e9s en raison de leur valeur mais aussi de leur duret\u00e9.<\/p>\r\n\r\n\r\n\r\n<p><strong>Quelle est la duret\u00e9 du diamant sur l&rsquo;\u00e9chelle de Mohs ?<\/strong> Le diamant se positionne au niveau de duret\u00e9 le plus \u00e9lev\u00e9, 10 sur l&rsquo;\u00e9chelle. C&rsquo;est le min\u00e9ral le plus dur qu&rsquo;il existe. Cela en fait un excellent choix pour les bagues de fian\u00e7ailles qui seront port\u00e9es tous les jours et donc fortement expos\u00e9es \u00e0 l&rsquo;usure g\u00e9n\u00e9rale.<\/p>\r\n\r\n\r\n\r\n<p>Les rubis et les saphirs sont \u00e9galement tr\u00e8s utilis\u00e9s pour ce type de bijou. en tant que membre de la famille des Corindons, ils ont une duret\u00e9 \u00e9lev\u00e9e. (duret\u00e9 9, juste derri\u00e8re le diamant). Ils sont \u00e9galement incroyablement r\u00e9sistants avec une structure interne solide.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" style=\"color: #f89406;\">Pierres pr\u00e9cieuses pour un usage occasionnel<\/h3>\r\n\r\n\r\n\r\n<p>En ce qui concerne les bijoux qui seront port\u00e9s occasionnellement, les pierres pr\u00e9cieuses avec une duret\u00e9 moins \u00e9lev\u00e9e peuvent \u00eatre utilis\u00e9es.<\/p>\r\n\r\n\r\n\r\n<p>Il faudra surtout vous demander si la pierre que vous allez travailler sera expos\u00e9e \u00e0 la lumi\u00e8re, la chaleur, les produits chimiques, etc. qui pourraient avoir un impact sur son aspect et sa structure.<\/p>\r\n\r\n\r\n\r\n<ul>\r\n<li><strong>Lorsqu&rsquo;elles sont trop expos\u00e9es \u00e0 la lumi\u00e8re<\/strong>, certaines pierres changeront de couleurs.<\/li>\r\n<li><strong>Lorsqu&rsquo;elles sont expos\u00e9es \u00e0 trop de chaleur<\/strong>, certaines pierres ont tendance \u00e0 se fissurer.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>Prenons l&rsquo;exemple de l&rsquo;\u00e9meraude. C&rsquo;est une pierre r\u00e9sistante \u00e0 7,5 &#8211; 8 sur l&rsquo;\u00e9chelle de Mohs, mais moins durable qu&rsquo;un saphir ou un rubis car il a une structure naturellement plus faible avec plus d&rsquo;inclusions. Il est donc sujet \u00e0 la fissure.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" style=\"color: #22398c;\">L&rsquo;\u00e9chelle de duret\u00e9 de Mohs pour les pierres pr\u00e9cieuses les plus courantes<\/h2>\r\n\r\n\r\n\r\n<p>Voici un tableau regroupant les pierres pr\u00e9cieuses les plus courantes avec leur indice de duret\u00e9 :<\/p>\r\n\r\n\r\n\n<table id=\"tablepress-2\" class=\"tablepress tablepress-id-2\">\n<thead>\n<tr class=\"row-1 odd\">\n\t<th class=\"column-1\">Pierre<\/th><th class=\"column-2\">Indice de duret\u00e9<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-hover\">\n<tr class=\"row-2 even\">\n\t<td class=\"column-1\">Agate<\/td><td class=\"column-2\">7<\/td>\n<\/tr>\n<tr class=\"row-3 odd\">\n\t<td class=\"column-1\">Ambre<\/td><td class=\"column-2\">2 - 2,5<\/td>\n<\/tr>\n<tr class=\"row-4 even\">\n\t<td class=\"column-1\">Am\u00e9thyste<\/td><td class=\"column-2\">7<\/td>\n<\/tr>\n<tr class=\"row-5 odd\">\n\t<td class=\"column-1\">Aigue Marine<\/td><td class=\"column-2\">7,5 - 8<\/td>\n<\/tr>\n<tr class=\"row-6 even\">\n\t<td class=\"column-1\">Cornaline<\/td><td class=\"column-2\">7<\/td>\n<\/tr>\n<tr class=\"row-7 odd\">\n\t<td class=\"column-1\">Citrine<\/td><td class=\"column-2\">7<\/td>\n<\/tr>\n<tr class=\"row-8 even\">\n\t<td class=\"column-1\">Diamant<\/td><td class=\"column-2\">10<\/td>\n<\/tr>\n<tr class=\"row-9 odd\">\n\t<td class=\"column-1\">Emeraude<\/td><td class=\"column-2\">7,5 - 8<\/td>\n<\/tr>\n<tr class=\"row-10 even\">\n\t<td class=\"column-1\">Fluorine<\/td><td class=\"column-2\">4<\/td>\n<\/tr>\n<tr class=\"row-11 odd\">\n\t<td class=\"column-1\">Grenat<\/td><td class=\"column-2\">6 - 6,5 <\/td>\n<\/tr>\n<tr class=\"row-12 even\">\n\t<td class=\"column-1\">H\u00e9matite<\/td><td class=\"column-2\">5,5 - 6,5<\/td>\n<\/tr>\n<tr class=\"row-13 odd\">\n\t<td class=\"column-1\">Jad\u00e9ite<\/td><td class=\"column-2\">6,5 - 7<\/td>\n<\/tr>\n<tr class=\"row-14 even\">\n\t<td class=\"column-1\">Labradorite<\/td><td class=\"column-2\">6 - 6,5<\/td>\n<\/tr>\n<tr class=\"row-15 odd\">\n\t<td class=\"column-1\">Lapis lazuli<\/td><td class=\"column-2\">5 - 5,5<\/td>\n<\/tr>\n<tr class=\"row-16 even\">\n\t<td class=\"column-1\">Malachite<\/td><td class=\"column-2\">3,5 - 4<\/td>\n<\/tr>\n<tr class=\"row-17 odd\">\n\t<td class=\"column-1\">Moissanite<\/td><td class=\"column-2\">9,5<\/td>\n<\/tr>\n<tr class=\"row-18 even\">\n\t<td class=\"column-1\">Pierre de lune<\/td><td class=\"column-2\">6 - 6,5<\/td>\n<\/tr>\n<tr class=\"row-19 odd\">\n\t<td class=\"column-1\">Nacre<\/td><td class=\"column-2\">2,5<\/td>\n<\/tr>\n<tr class=\"row-20 even\">\n\t<td class=\"column-1\">Onyx<\/td><td class=\"column-2\">6,5 - 7<\/td>\n<\/tr>\n<tr class=\"row-21 odd\">\n\t<td class=\"column-1\">Opale<\/td><td class=\"column-2\">5,5 - 6,5<\/td>\n<\/tr>\n<tr class=\"row-22 even\">\n\t<td class=\"column-1\">Opale de feu<\/td><td class=\"column-2\">6 - 6,5<\/td>\n<\/tr>\n<tr class=\"row-23 odd\">\n\t<td class=\"column-1\">Perle<\/td><td class=\"column-2\">2,5<\/td>\n<\/tr>\n<tr class=\"row-24 even\">\n\t<td class=\"column-1\">P\u00e9ridot<\/td><td class=\"column-2\">6,5 - 7<\/td>\n<\/tr>\n<tr class=\"row-25 odd\">\n\t<td class=\"column-1\">Quartz<\/td><td class=\"column-2\">7<\/td>\n<\/tr>\n<tr class=\"row-26 even\">\n\t<td class=\"column-1\">Rhodochrosite<\/td><td class=\"column-2\">3,5 - 4<\/td>\n<\/tr>\n<tr class=\"row-27 odd\">\n\t<td class=\"column-1\">Rubis<\/td><td class=\"column-2\">9<\/td>\n<\/tr>\n<tr class=\"row-28 even\">\n\t<td class=\"column-1\">Saphir<\/td><td class=\"column-2\">9<\/td>\n<\/tr>\n<tr class=\"row-29 odd\">\n\t<td class=\"column-1\">Oeil de tigre<\/td><td class=\"column-2\">6<\/td>\n<\/tr>\n<tr class=\"row-30 even\">\n\t<td class=\"column-1\">Topaze<\/td><td class=\"column-2\">8<\/td>\n<\/tr>\n<tr class=\"row-31 odd\">\n\t<td class=\"column-1\">Tourmaline<\/td><td class=\"column-2\">7 - 7,5<\/td>\n<\/tr>\n<tr class=\"row-32 even\">\n\t<td class=\"column-1\">Turquoise<\/td><td class=\"column-2\">5 - 6<\/td>\n<\/tr>\n<tr class=\"row-33 odd\">\n\t<td class=\"column-1\">Zircon cubique<\/td><td class=\"column-2\">8 - 8,5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-2 from cache -->\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" style=\"color: #f89406;\">D\u00e9couvrez les gemmes en vente chez Cookson-CLAL :<\/h3>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter\"><a href=\"https:\/\/www.cookson-clal.com\/Gemmes\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" width=\"1012\" height=\"300\" class=\"wp-image-6797\" src=\"https:\/\/www.cookson-clal.com\/le-blog\/wp-content\/uploads\/2020\/03\/HPB-NewGms.jpg\" alt=\"acheter gemmes cookson-clal\" srcset=\"https:\/\/www.cookson-clal.com\/le-blog\/wp-content\/uploads\/2020\/03\/HPB-NewGms.jpg 1012w, https:\/\/www.cookson-clal.com\/le-blog\/wp-content\/uploads\/2020\/03\/HPB-NewGms-300x89.jpg 300w, https:\/\/www.cookson-clal.com\/le-blog\/wp-content\/uploads\/2020\/03\/HPB-NewGms-300x89@2x.jpg 600w\" sizes=\"(max-width: 1012px) 100vw, 1012px\" \/><\/a><\/figure>\r\n<\/div>\r\n","protected":false},"excerpt":{"rendered":"<p>IInvent\u00e9e en 1813 par le min\u00e9ralogiste Friedrich Mohs, l&rsquo;\u00e9chelle de Mohs permet de mesurer la duret\u00e9 des m\u00e9taux. Cet outil indispensable va vous permettre de conna\u00eetre la r\u00e9sistance des pierres&#8230;<\/p>\n","protected":false},"author":7,"featured_media":7715,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[262,246],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>L\u2019\u00e9chelle de Mohs : la duret\u00e9 des min\u00e9raux | L&#039;atelier - Le blog des cr\u00e9ateurs de bijoux Cookson CLAL<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.cookson-clal.com\/le-blog\/echelle-de-mohs-durete-des-mineraux\/\" \/>\r\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"L\u2019\u00e9chelle de Mohs : la duret\u00e9 des min\u00e9raux | L&#039;atelier - Le blog des cr\u00e9ateurs de bijoux Cookson CLAL\" \/>\r\n<meta property=\"og:description\" content=\"IInvent\u00e9e en 1813 par le min\u00e9ralogiste Friedrich Mohs, l&rsquo;\u00e9chelle de Mohs permet de mesurer la duret\u00e9 des m\u00e9taux. 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