{"id":47458,"date":"2026-04-30T11:05:54","date_gmt":"2026-04-30T09:05:54","guid":{"rendered":"https:\/\/www.ssef.ch\/?p=47458"},"modified":"2026-04-30T11:05:54","modified_gmt":"2026-04-30T09:05:54","slug":"emeralds-from-the-minas-canaa-minas-gerais-brazil","status":"publish","type":"post","link":"https:\/\/www.ssef.ch\/zh-hans\/emeralds-from-the-minas-canaa-minas-gerais-brazil\/","title":{"rendered":"Emeralds from the Minas Cana\u00e3, Minas Gerais, Brazil"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"47458\" class=\"elementor elementor-47458\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7e59a34 e-flex e-con-boxed qodef-elementor-content-no e-con e-parent\" data-id=\"7e59a34\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-30c8b01 elementor-widget elementor-widget-text-editor\" data-id=\"30c8b01\" 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>By Isabelle Beney, SSEF, first published in <a href=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/02\/facette-2026-web.pdf\" target=\"_blank\" rel=\"noopener\">Facette 30<\/a> (March 2026)<\/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-04fc55f elementor-widget elementor-widget-image\" data-id=\"04fc55f\" 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=\"1024\" height=\"357\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/03\/301-Combined-emeralds.jpg\" class=\"attachment-large size-large wp-image-47580\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/03\/301-Combined-emeralds.jpg 1024w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/03\/301-Combined-emeralds-300x105.jpg 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/03\/301-Combined-emeralds-768x268.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 1: Images of emeralds from Cana\u00e3. Photo: 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-7367762 elementor-widget elementor-widget-spacer\" data-id=\"7367762\" 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-f781946 elementor-widget elementor-widget-text-editor\" data-id=\"f781946\" 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\tIn September 2024, the SSEF had the privilege of testing a few emeralds from the Mina Cana\u00e3, some of which exhibited exceptional qualities. Impressive in terms of weight, clarity and colour, these stones had further been spared any treatments, thus meaning their attributes were entirely natural.\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-00fcc46 elementor-widget elementor-widget-spacer\" data-id=\"00fcc46\" 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-e74e40a elementor-widget elementor-widget-text-editor\" data-id=\"e74e40a\" 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>Background<\/h2>\nThe Mina Cana\u00e3 is situated south-east of Itabira, in the Brazilian state of Minas Gerais. Although the deposit which the mine exploits is already well known (there are other known emerald producers also situated in the same area), as with any geological deposit, there is spatial variety in terms of the products mined and their physical and chemical attributes. The emeralds at the Mina Cana\u00e3 are extracted from phlogopite schist host rock \u2013 iron-bearing surroundings that ensure emerald is not the only form of beryl that is found at the locality; note, aquamarine is also found at Cana\u00e3.\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-44ce25c elementor-widget elementor-widget-image\" data-id=\"44ce25c\" 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 decoding=\"async\" width=\"1016\" height=\"709\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/03\/301-Canaa-inclusions.jpg\" class=\"attachment-large size-large wp-image-47586\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/03\/301-Canaa-inclusions.jpg 1016w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/03\/301-Canaa-inclusions-300x209.jpg 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2026\/03\/301-Canaa-inclusions-768x536.jpg 768w\" sizes=\"(max-width: 1016px) 100vw, 1016px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Figure 2: Microphotos of emeralds from the Mina Cana\u00e3. Note the fine growth needles (almost \u2018rain\u2019-like) from different perspectives in images A + D, fluid inclusions in B + C, and the zoning visible in B + D. Photos: 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-041377a elementor-widget elementor-widget-spacer\" data-id=\"041377a\" 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-b5d0806 elementor-widget elementor-widget-text-editor\" data-id=\"b5d0806\" 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>Properties<\/h2>\nChemically speaking, the emeralds analysed from the Mina Cana\u00e3 are comparatively iron rich, with the concentrations of this trace element always reading one order of magnitude higher than chromium, and two orders of magnitude higher than vanadium. In terms of microscopic observations, what sets these stones apart from most other emeralds is their comparative lack of large inclusions and fissures, typically common in emeralds regardless of source. Furthermore, their unusual clarity was not due to enhancements from any treatment processes, making these stones particularly exceptional. The few microscopic observations made were mostly of short and fine needle-like growth channels, usually oriented parallel with the optic axis (see Figure 2, A + D), and strong colour and growth zoning, oriented perpendicular to the optic axis (see Figure 2, B + D). Few two-phase inclusions were observed (e.g., Figure 2C).\nBeing able to examine exceptional material like these emeralds is one of the biggest privileges to have as a gemmologist. Here at SSEF we are grateful to have had this opportunity.\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-a2dd810 elementor-widget elementor-widget-spacer\" data-id=\"a2dd810\" 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\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>In September 2024, the SSEF had the privilege of testing a few emeralds from the Mina Cana\u00e3, some of which exhibited exceptional qualities. Impressive in terms of weight, clarity and colour, these stones had further been spared any treatments, thus meaning their attributes were entirely natural.<\/p>\n","protected":false},"author":10,"featured_media":47573,"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":[727],"library_category":[],"library_author":[],"class_list":["post-47458","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-blog","tag-emerald"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Emeralds from the Minas Cana\u00e3, Minas Gerais, Brazil - 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\/emeralds-from-the-minas-canaa-minas-gerais-brazil\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Emeralds from the Minas Cana\u00e3, Minas Gerais, Brazil - SSEF\" \/>\n<meta property=\"og:description\" content=\"In September 2024, the SSEF had the privilege of testing a few emeralds from the Mina Cana\u00e3, some of which exhibited exceptional qualities. 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