{"id":19511,"date":"2023-04-03T14:44:06","date_gmt":"2023-04-03T12:44:06","guid":{"rendered":"https:\/\/ssef.ch\/?p=19511"},"modified":"2023-06-12T15:04:59","modified_gmt":"2023-06-12T13:04:59","slug":"la-science-de-lanalyse-des-saphirs","status":"publish","type":"post","link":"https:\/\/www.ssef.ch\/fr\/la-science-de-lanalyse-des-saphirs\/","title":{"rendered":"La science de l\u2019analyse des saphirs"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"19511\" class=\"elementor elementor-19511\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5de6727 elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-backgound-letter-holder-no qodef-elementor-content-no\" data-id=\"5de6727\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4cb3c62\" data-id=\"4cb3c62\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-329c1da elementor-widget elementor-widget-image\" data-id=\"329c1da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"417\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/science-analyse-saphirs-jpeg.webp\" class=\"attachment-large size-large wp-image-26476\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/science-analyse-saphirs-jpeg.webp 1000w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/science-analyse-saphirs-300x125.webp 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/science-analyse-saphirs-768x320.webp 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b113fd elementor-widget elementor-widget-text-editor\" data-id=\"5b113fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tLes saphirs sont analys\u00e9s scientifiquement \u00e0 l\u2019aide d\u2019un ensemble de techniques analytiques en combinaison avec un examen au microscope. Ces analyses permettent de d\u00e9terminer si un saphir a \u00e9t\u00e9 trait\u00e9 ou non et d\u2019\u00e9tablir son origine g\u00e9ologique et g\u00e9ographique.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d59c54d elementor-widget elementor-widget-spacer\" data-id=\"d59c54d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab86f0d elementor-widget elementor-widget-text-editor\" data-id=\"ab86f0d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Spectroscopie d\u2019absorption UV \/ visible pour la d\u00e9termination de l\u2019origine<\/h2><p>La spectrophotom\u00e9trie ultraviolette \/ visible \/ proche infrarouge (UV \/ VIS \/ NIR) est une m\u00e9thode de spectroscopie d\u2019absorption couramment utilis\u00e9e pour analyser la couleur des saphirs et ainsi obtenir des informations sur ses composants chimiques et son origine possible.<\/p><p>En observant les bandes et pics d\u2019absorption sur un spectre UV-Vis, il est possible de mesurer les modes d\u2019absorption et de transmission dans un saphir, ce qui nous donne des indices sur les \u00e9l\u00e9ments donnant la couleur (p. ex. le fer Fe2+ou Fe3+ ; le titane Ti4+) qui pourraient \u00eatre pr\u00e9sents ainsi que sur leur ratio relatif. Ces donn\u00e9es sont utiles pour caract\u00e9riser un saphir et recueillir des indices sur l\u2019origine g\u00e9ologique et g\u00e9ographique possible du saphir. Un spectre caract\u00e9ristique d\u2019un saphir provenant d\u2019un gisement de type basaltique compar\u00e9 \u00e0 un saphir provenant d\u2019un gisement m\u00e9tamorphique est pr\u00e9sent\u00e9 ci-apr\u00e8s.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-f7dfc8f elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-backgound-letter-holder-no qodef-elementor-content-no\" data-id=\"f7dfc8f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-65f3412\" data-id=\"65f3412\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e2ed7c2 elementor-widget elementor-widget-image\" data-id=\"e2ed7c2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"500\" height=\"465\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire-spectroscopy-basaltic-deposit-jpeg.webp\" class=\"attachment-large size-large wp-image-26466\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire-spectroscopy-basaltic-deposit-jpeg.webp 500w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire-spectroscopy-basaltic-deposit-300x279.webp 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-54f35c2\" data-id=\"54f35c2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-53ee1a6 elementor-widget elementor-widget-image\" data-id=\"53ee1a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"500\" height=\"510\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire-spectroscopy-sri-lanka-jpeg.webp\" class=\"attachment-large size-large wp-image-26471\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire-spectroscopy-sri-lanka-jpeg.webp 500w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire-spectroscopy-sri-lanka-294x300.webp 294w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-bfc6b23 elementor-widget elementor-widget-spacer\" data-id=\"bfc6b23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-503b4f3 elementor-widget elementor-widget-text-editor\" data-id=\"503b4f3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Analyse des \u00e9l\u00e9ments traces des saphirs pour la d\u00e9termination de l\u2019origine<\/h2><p>La composition chimique des saphirs peut donner des informations essentielles sur leur origine g\u00e9ologique et g\u00e9ographique possible. Une analyse chimique avanc\u00e9e peut \u00eatre r\u00e9alis\u00e9e \u00e0 l\u2019aide des techniques de fluorescence X \u00e0 dispersion d\u2019\u00e9nergie (EDXRF) et de spectrom\u00e9trie de masse GemTOF (voir vid\u00e9o ci-dessous pour en savoir plus).<\/p><p>La chimie des \u00e9l\u00e9ments traces peut ensuite \u00eatre compar\u00e9e \u00e0 une base de donn\u00e9es document\u00e9e et fiable, donnant des informations suppl\u00e9mentaires sur le pays d\u2019origine d\u2019un saphir. La vid\u00e9o ci-dessous montre un sch\u00e9ma de trois \u00e9l\u00e9ments chimiques diff\u00e9rents qui peuvent servir \u00e0 qualifier quatre saphirs bleus dans notre collection de recherche (les quatre sp\u00e9cimens sont indiqu\u00e9s par des triangles) par comparaison avec d\u2019autres points de donn\u00e9es de r\u00e9f\u00e9rence (indiqu\u00e9s par des tirets).<\/p><p>Dans des cas sp\u00e9cifiques, il est m\u00eame possible de dater l\u2019\u00e2ge radiom\u00e9trique sur les inclusions proches de la surface du saphir ce qui non seulement donne de nouvelles preuves de son origine mais fournit \u00e9galement des informations passionnantes remontant \u00e0 des millions d\u2019ann\u00e9es au moment o\u00f9 le saphir s\u2019est form\u00e9 dans la roche h\u00f4te.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eca08f6 elementor-widget elementor-widget-spacer\" data-id=\"eca08f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41c72b0 elementor-widget elementor-widget-video\" data-id=\"41c72b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;vimeo&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<iframe class=\"elementor-video-iframe\" allowfullscreen allow=\"clipboard-write\" title=\"Lecteur vid\u00e9o vimeo\" src=\"https:\/\/player.vimeo.com\/video\/185771004?color&amp;autopause=0&amp;loop=0&amp;muted=0&amp;title=1&amp;portrait=1&amp;byline=1#t=\"><\/iframe>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7da3197 elementor-widget elementor-widget-spacer\" data-id=\"7da3197\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9d5828e elementor-widget elementor-widget-video\" data-id=\"9d5828e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;vimeo&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<iframe class=\"elementor-video-iframe\" allowfullscreen allow=\"clipboard-write\" title=\"Lecteur vid\u00e9o vimeo\" src=\"https:\/\/player.vimeo.com\/video\/190582974?color&amp;autopause=0&amp;loop=0&amp;muted=0&amp;title=1&amp;portrait=1&amp;byline=1#t=\"><\/iframe>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-934a6b3 elementor-widget elementor-widget-spacer\" data-id=\"934a6b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a27d20 elementor-widget elementor-widget-text-editor\" data-id=\"0a27d20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Analyses et rapports au SSEF<\/h3><p>Exemple de rapport gemmologique du SSEF sur un saphir :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dd70258 elementor-widget elementor-widget-image\" data-id=\"dd70258\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"724\" height=\"1024\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire_loose_royal_blue.jpg\" class=\"attachment-full size-full wp-image-25957\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire_loose_royal_blue.jpg 724w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/06\/Sapphire_loose_royal_blue-212x300.webp 212w\" sizes=\"(max-width: 724px) 100vw, 724px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-afa2689 elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-backgound-letter-holder-no qodef-elementor-content-no\" data-id=\"afa2689\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5858904\" data-id=\"5858904\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-88f188f elementor-widget elementor-widget-text-editor\" data-id=\"88f188f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Vous voulez en savoir plus sur les saphirs ?<\/h3><p>Inscrivez-vous \u00e0 notre cours en ligne gratuit : Introduction aux saphirs<\/p><p>Apprenez tout sur les saphirs. Leur histoire fascinante, comment ils se forment, d&rsquo;o\u00f9 ils viennent. D\u00e9couvrez les diff\u00e9rentes origines des saphirs et leurs traitements. Ce cours est une introduction au monde merveilleux du saphir.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-098a4db elementor-widget elementor-widget-laurits_core_button\" data-id=\"098a4db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"laurits_core_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<a class=\"qodef-shortcode qodef-m qodef-button qodef-layout--filled qodef-html--link\" href=\"https:\/\/masterclass-fr.ssef.ch\/p\/saphirs\" target=\"_blank\"  >\n\t<span class=\"qodef-m-text\">S&#039;inscrire gratuitement<\/span>\n<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Les saphirs sont analys\u00e9s scientifiquement \u00e0 l\u2019aide d\u2019un ensemble de techniques analytiques en combinaison avec un examen au microscope. Ces analyses permettent de d\u00e9terminer si un saphir a \u00e9t\u00e9 trait\u00e9 ou non et d\u2019\u00e9tablir son origine g\u00e9ologique et g\u00e9ographique. Spectroscopie d\u2019absorption UV \/ visible pour la d\u00e9termination de l\u2019origine La spectrophotom\u00e9trie ultraviolette \/ visible \/ [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":26036,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[684],"tags":[],"library_category":[],"library_author":[],"class_list":["post-19511","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recherches-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La science de l\u2019analyse des saphirs - SSEF<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ssef.ch\/fr\/la-science-de-lanalyse-des-saphirs\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La science de l\u2019analyse des saphirs - SSEF\" \/>\n<meta property=\"og:description\" content=\"Les saphirs sont analys\u00e9s scientifiquement \u00e0 l\u2019aide d\u2019un ensemble de techniques analytiques en combinaison avec un examen au microscope. Ces analyses permettent de d\u00e9terminer si un saphir a \u00e9t\u00e9 trait\u00e9 ou non et d\u2019\u00e9tablir son origine g\u00e9ologique et g\u00e9ographique. 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