{"id":33014,"date":"2023-07-06T17:46:46","date_gmt":"2023-07-06T15:46:46","guid":{"rendered":"https:\/\/ssef.ch\/?p=33014"},"modified":"2023-09-21T17:35:11","modified_gmt":"2023-09-21T15:35:11","slug":"a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline","status":"publish","type":"post","link":"https:\/\/www.ssef.ch\/zh-hant\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\/","title":{"rendered":"A perfect match: Paraiba tourmaline and Indicolite tourmaline"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"33014\" class=\"elementor elementor-33014\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4ae10602 elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-backgound-letter-holder-no qodef-elementor-content-no\" data-id=\"4ae10602\" 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-112861b6\" data-id=\"112861b6\" 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-8193a95 elementor-widget elementor-widget-text-editor\" data-id=\"8193a95\" 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<p><strong>First published in <a href=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/05\/facette-2023-web.pdf\">Facette 28<\/a> (May 2023)<\/strong><\/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-8ca6be6 elementor-widget elementor-widget-text-editor\" data-id=\"8ca6be6\" 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<p>A few months ago, a client submitted to SSEF two tourmalines of attractive and matching shape, size and colour, both supposedly being Paraiba tourmalines (Figure 1).<\/p><p>Chemical analyses and absorption spectra (UV-Vis-NIR) quickly revealed that their composition and colour cause was much less matching than their visual appearances.<\/p><p>The slightly larger stone of 10 ct (left in Figure 1) contained minor concentrations of copper (CuO 0.24 wt%) but no iron. In contrast to this, the slightly smaller stone of 8.5 ct (right in Figure 1) showed no copper at all but a distinct concentration of iron (Fe2O3 2.0 wt%). Absorption spectra confirmed their identity, showing distinct Cu-absorption bands in the left stone but only an Fe-related band at about 710 nm. Both, we and our client were astonished to learn that these two very similar looking tourmalines in fact were a Paraiba tourmaline (left) and an indicolite tourmaline (right). This case demonstrates well that having your gems tested might be very wise before making major buying decisions, specifically in the fast-paced environment of a jewellery show.<\/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-73a9759 elementor-widget elementor-widget-image\" data-id=\"73a9759\" 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<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"960\" height=\"594\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/317_Fig1_Perfect-match_Paraiba-Indicolite-jpg.webp\" class=\"attachment-full size-full wp-image-33024\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/317_Fig1_Perfect-match_Paraiba-Indicolite-jpg.webp 960w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/317_Fig1_Perfect-match_Paraiba-Indicolite-300x186.webp 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/317_Fig1_Perfect-match_Paraiba-Indicolite-768x475.webp 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 1: Submitted as a matching pair of Paraiba tourmalines, our testing revealed that only the left stone is copper-bearing, whereas the right stone was identified as an indicolite tourmaline. Photo: L. Phan, SSEF.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\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-ae7f74b elementor-widget elementor-widget-spacer\" data-id=\"ae7f74b\" 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\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-84ecfe6 elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-backgound-letter-holder-no qodef-elementor-content-no\" data-id=\"84ecfe6\" 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-50 elementor-top-column elementor-element elementor-element-07b7336\" data-id=\"07b7336\" 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-9f3dc03 elementor-widget elementor-widget-text-editor\" data-id=\"9f3dc03\" 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>Want to learn more about toumalines?<\/h2>\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-9cbbea0 elementor-widget elementor-widget-image\" data-id=\"9cbbea0\" 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=\"1024\" height=\"738\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/03\/301_Fig10_Cu-tourmaline-1024x738.jpg\" class=\"attachment-large size-large wp-image-5370\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/03\/301_Fig10_Cu-tourmaline-1024x738.jpg 1024w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/03\/301_Fig10_Cu-tourmaline-300x216.jpg 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/03\/301_Fig10_Cu-tourmaline-768x554.jpg 768w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/03\/301_Fig10_Cu-tourmaline-700x505.jpg 700w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/03\/301_Fig10_Cu-tourmaline.jpg 1100w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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-top-column elementor-element elementor-element-0b04fa1\" data-id=\"0b04fa1\" 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-4f122f2 elementor-widget elementor-widget-text-editor\" data-id=\"4f122f2\" 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<h4>Start your journey to becoming a tourmaline expert with our free online course &#8220;Introduction to tourmalines&#8221;.<\/h4><p>Learn all about tourmalines. Their fascinating history, how they form, where they come from. Learn about all the different origins of tourmalines and their treatments. Take this course as an introduction to the wonderful world of tourmalines.<\/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-afd9450 elementor-widget elementor-widget-laurits_core_button\" data-id=\"afd9450\" 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:\/\/www.ssef.ch\/masterclass\/tourmaline-en\/\" target=\"_self\"  >\n\t<span class=\"qodef-m-text\">Discover the course<\/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>A few months ago, a client submitted to SSEF two tourmalines of attractive and matching shape, size and colour, both supposedly being Paraiba tourmalines (Figure 1). Chemical analyses and absorption spectra (UV-Vis-NIR) quickly revealed that their composition and colour cause was much less matching than their visual appearances.<\/p>\n","protected":false},"author":3,"featured_media":33017,"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":[626],"tags":[734],"library_category":[],"library_author":[],"class_list":["post-33014","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-blog","tag-tourmaline"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A perfect match: Paraiba tourmaline and Indicolite tourmaline - 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\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\/\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A perfect match: Paraiba tourmaline and Indicolite tourmaline - SSEF\" \/>\n<meta property=\"og:description\" content=\"A few months ago, a client submitted to SSEF two tourmalines of attractive and matching shape, size and colour, both supposedly being Paraiba tourmalines (Figure 1). Chemical analyses and absorption spectra (UV-Vis-NIR) quickly revealed that their composition and colour cause was much less matching than their visual appearances.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ssef.ch\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\/\" \/>\n<meta property=\"og:site_name\" content=\"SSEF\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-06T15:46:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-21T15:35:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/Perfect-match_Paraiba-Indicolite-jpg.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"338\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Laurent Cartier\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Laurent Cartier\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9810\u4f30\u95b1\u8b80\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\u9418\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\\\/\"},\"author\":{\"name\":\"Laurent Cartier\",\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/zh-hans\\\/#\\\/schema\\\/person\\\/c855f01c061d2c7b29f823eaee439288\"},\"headline\":\"A perfect match: Paraiba tourmaline and Indicolite tourmaline\",\"datePublished\":\"2023-07-06T15:46:46+00:00\",\"dateModified\":\"2023-09-21T15:35:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\\\/\"},\"wordCount\":277,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/zh-hans\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ssef.ch\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/Perfect-match_Paraiba-Indicolite-jpg.webp\",\"keywords\":[\"Tourmaline\"],\"articleSection\":[\"Research Blog\"],\"inLanguage\":\"zh-TW\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\\\/\",\"url\":\"https:\\\/\\\/www.ssef.ch\\\/a-perfect-match-paraiba-tourmaline-and-indicolite-tourmaline\\\/\",\"name\":\"A perfect match: Paraiba tourmaline and Indicolite tourmaline - 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