{"id":18429,"date":"2020-11-12T19:16:55","date_gmt":"2020-11-12T19:16:55","guid":{"rendered":"https:\/\/www.africa-press.com\/tanzania\/?p=18429"},"modified":"2020-11-12T19:16:55","modified_gmt":"2020-11-12T19:16:55","slug":"tanzanite-the-gem-that-lights-tanzania","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania","title":{"rendered":"TANZANITE, THE GEM THAT LIGHTS TANZANIA"},"content":{"rendered":"

AfricaPress-Tanzania:<\/strong> TANZANITE is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium.<\/p>\n

Tanzanite belongs to the epidotemineral group. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km (4.3mi) long and 2 km (1.2mi) wide) near the Mererani [sw] Hills.<\/p>\n

Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation. Tanzanite can also appear differently when viewed under different lighting conditions.<\/p>\n

The blues appear more evident when subjected to fluorescent light and the violet hues can be seen readily when viewed under incandescent illumination.<\/p>\n

In its rough state tanzanite is colored a reddish brown to clear, and it requires heat treatment to remove the brownish \u201cveil\u201d and bring out the blue violet of the stone. The gemstone was given the name \u2018tanzanite\u2019 by Tiffany & Co. after Tanzania, the country in which it was discovered.<\/p>\n

The scientific name of \u201cblue-violet zoisite\u201d was not thought to be sufficiently consumer friendly by Tiffany\u2019s marketing department, who introduced it to the market in 1968. In 2002, the American Gem Trade Association chose tanzanite as a December birthstone, the first change to their birthstone list since 1912.<\/p>\n

Tanzanite was formed around 585 million years ago during the mid-Ediacaran Period by massive plate tectonic activity and intense heat in the area that would later become Mount Kilimanjaro.<\/p>\n

The mineral is located in a relatively complex geological environment. Deposits are typically found in the \u201chinge\u201d of isoclinal folds.<\/p>\n","protected":false},"excerpt":{"rendered":"

AfricaPress-Tanzania: TANZANITE is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium. Tanzanite belongs to the epidotemineral group. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km (4.3mi) long and 2 km (1.2mi) wide) near the Mererani [sw] […]<\/p>\n","protected":false},"author":84,"featured_media":18413,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,8,9],"tags":[6620,6619],"class_list":["post-18429","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all-news","category-homepage-english","category-miscellaneous","tag-gem","tag-tanzanite"],"yoast_head":"\nTANZANITE, THE GEM THAT LIGHTS TANZANIA - Tanzania<\/title>\n<meta name=\"description\" content=\"TANZANITE is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of\" \/>\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.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TANZANITE, THE GEM THAT LIGHTS TANZANIA\" \/>\n<meta property=\"og:description\" content=\"TANZANITE is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania\" \/>\n<meta property=\"og:site_name\" content=\"Tanzania\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/AfricaPressTunisiaa\" \/>\n<meta property=\"article:published_time\" content=\"2020-11-12T19:16:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"717\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditoren\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditoren\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania\"},\"author\":{\"name\":\"cfeditoren\",\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/#\/schema\/person\/068c7ab4e9634ae78ec5d54ec46598bb\"},\"headline\":\"TANZANITE, THE GEM THAT LIGHTS TANZANIA\",\"datePublished\":\"2020-11-12T19:16:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania\"},\"wordCount\":257,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg\",\"keywords\":[\"GEM\",\"TANZANITE\"],\"articleSection\":[\"all news\",\"homepage-english\",\"miscellaneous\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania\",\"url\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania\",\"name\":\"TANZANITE, THE GEM THAT LIGHTS TANZANIA - Tanzania\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg\",\"datePublished\":\"2020-11-12T19:16:55+00:00\",\"author\":{\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/#\/schema\/person\/068c7ab4e9634ae78ec5d54ec46598bb\"},\"description\":\"TANZANITE is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of\",\"breadcrumb\":{\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#primaryimage\",\"url\":\"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg\",\"contentUrl\":\"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg\",\"width\":1024,\"height\":717},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.africa-press.net\/tanzania\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"TANZANITE, THE GEM THAT LIGHTS TANZANIA\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/#website\",\"url\":\"https:\/\/www.africa-press.net\/tanzania\/\",\"name\":\"Tanzania\",\"description\":\"Just another Africa News Agency Sites site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.africa-press.net\/tanzania\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/#\/schema\/person\/068c7ab4e9634ae78ec5d54ec46598bb\",\"name\":\"cfeditoren\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.africa-press.net\/tanzania\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/7417380fa9e23b5c57fdbfdaf3fdf92ee478f759a084addda5faa3732853e74a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/7417380fa9e23b5c57fdbfdaf3fdf92ee478f759a084addda5faa3732853e74a?s=96&d=mm&r=g\",\"caption\":\"cfeditoren\"}}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"TANZANITE, THE GEM THAT LIGHTS TANZANIA - Tanzania","description":"TANZANITE is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania","og_locale":"en_US","og_type":"article","og_title":"TANZANITE, THE GEM THAT LIGHTS TANZANIA","og_description":"TANZANITE is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of","og_url":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania","og_site_name":"Tanzania","article_publisher":"https:\/\/www.facebook.com\/AfricaPressTunisiaa","article_published_time":"2020-11-12T19:16:55+00:00","og_image":[{"width":1024,"height":717,"url":"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg","type":"image\/jpeg"}],"author":"cfeditoren","twitter_card":"summary_large_image","twitter_misc":{"Written by":"cfeditoren","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#article","isPartOf":{"@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania"},"author":{"name":"cfeditoren","@id":"https:\/\/www.africa-press.net\/tanzania\/#\/schema\/person\/068c7ab4e9634ae78ec5d54ec46598bb"},"headline":"TANZANITE, THE GEM THAT LIGHTS TANZANIA","datePublished":"2020-11-12T19:16:55+00:00","mainEntityOfPage":{"@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania"},"wordCount":257,"commentCount":0,"image":{"@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg","keywords":["GEM","TANZANITE"],"articleSection":["all news","homepage-english","miscellaneous"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania","url":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania","name":"TANZANITE, THE GEM THAT LIGHTS TANZANIA - Tanzania","isPartOf":{"@id":"https:\/\/www.africa-press.net\/tanzania\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#primaryimage"},"image":{"@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg","datePublished":"2020-11-12T19:16:55+00:00","author":{"@id":"https:\/\/www.africa-press.net\/tanzania\/#\/schema\/person\/068c7ab4e9634ae78ec5d54ec46598bb"},"description":"TANZANITE is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of","breadcrumb":{"@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#primaryimage","url":"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg","contentUrl":"https:\/\/static.africa-press.net\/tanzania\/sites\/17\/2020\/11\/4621442a63acfd427e0e213210e4dc27.jpg","width":1024,"height":717},{"@type":"BreadcrumbList","@id":"https:\/\/www.africa-press.net\/tanzania\/miscellaneous\/tanzanite-the-gem-that-lights-tanzania#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.africa-press.net\/tanzania\/"},{"@type":"ListItem","position":2,"name":"TANZANITE, THE GEM THAT LIGHTS TANZANIA"}]},{"@type":"WebSite","@id":"https:\/\/www.africa-press.net\/tanzania\/#website","url":"https:\/\/www.africa-press.net\/tanzania\/","name":"Tanzania","description":"Just another Africa News Agency Sites site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.africa-press.net\/tanzania\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.africa-press.net\/tanzania\/#\/schema\/person\/068c7ab4e9634ae78ec5d54ec46598bb","name":"cfeditoren","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.africa-press.net\/tanzania\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/7417380fa9e23b5c57fdbfdaf3fdf92ee478f759a084addda5faa3732853e74a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/7417380fa9e23b5c57fdbfdaf3fdf92ee478f759a084addda5faa3732853e74a?s=96&d=mm&r=g","caption":"cfeditoren"}}]}},"_links":{"self":[{"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/posts\/18429","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/users\/84"}],"replies":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/comments?post=18429"}],"version-history":[{"count":0,"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/posts\/18429\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/media\/18413"}],"wp:attachment":[{"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/media?parent=18429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/categories?post=18429"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.africa-press.net\/tanzania\/wp-json\/wp\/v2\/tags?post=18429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}