{"id":3545,"date":"2020-04-25T16:55:00","date_gmt":"2020-04-25T14:55:00","guid":{"rendered":"https:\/\/ssef.ch\/?p=3545"},"modified":"2022-11-02T15:28:18","modified_gmt":"2022-11-02T14:28:18","slug":"purple-mozambique-garnet","status":"publish","type":"post","link":"https:\/\/www.ssef.ch\/jp\/purple-mozambique-garnet\/","title":{"rendered":"Purple Mozambique Garnet"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/ssef.ch\/wp-content\/uploads\/2020\/04\/403-Fig-1.-three-purple-garnet-1024x509.jpg\" alt=\"\" class=\"wp-image-3546\"\/><figcaption><em>Figure 1: Three purple rhodolite garnets tested by SSEF at the beginning of 2016, ranging in weight from 7 to 13 carats. Photo: SSEF<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"> by Dr. W. Zhou, first published in&nbsp;Facette 23&nbsp;(February 2017) <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In early 2016, attractive bright purple garnets arrived at SSEF (Figure 1) in Bangkok, Basel and Hong Kong. Based on client information, they are from a new mine, Padagaga in the Chimoio area in Mozambique,  which was discovered recently (Schwarz, 2016). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After routine gemmological testing, the chemistry of these garnets fits with rhodolite, within the solid solution series pyrope (Mg<sub>3<\/sub>Al<sub>2<\/sub>Si<sub>3<\/sub>O<sub>12<\/sub>) \u2013 almandine (Fe<sub>3<\/sub>Al<sub>2<\/sub>Si<sub>3<\/sub>O<sub>12<\/sub>). EDXRF analysis shows main chemical composition is around: Fe<sub>2<\/sub>O<sub>3<\/sub> 27%, MgO 17%, Al<sub>2<\/sub>O<sub>3<\/sub> 19% and SiO<sub>2<\/sub> 36% with minor amounts of CaO and MnO. Comparing this to published data (Lind, 2015, Schwarz, 2016 and Sangsawong 2016), the UV-Vis spectra (Figure 2) shows Fe<sup>2+<\/sup> absorptions that dominate (around 500-700 nm, especially the ones from 500-600 nm) together with a mixture of Mn<sup>2+<\/sup> (ca. 410 nm), while the contribution of V<sup>3+<\/sup> + Cr<sup>3+<\/sup> (420 to 430 nm and 515-530 nm) is relatively low.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Since this new material only recently appeared on the market, further studies are required to entirely understand the gemmological differences between this and stones from traditional localities like Tanzania and Malawi. We look forward to seeing many more such charming purple rhodolite garnets in the SSEF.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"864\" src=\"https:\/\/ssef.ch\/wp-content\/uploads\/2020\/04\/403-Fig-2.-uvvis-1024x864.jpg\" alt=\"\" class=\"wp-image-3549\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/403-Fig-2.-uvvis-1024x864.jpg 1024w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/403-Fig-2.-uvvis-300x253.jpg 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/403-Fig-2.-uvvis-768x648.jpg 768w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/403-Fig-2.-uvvis-700x591.jpg 700w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/403-Fig-2.-uvvis.jpg 1100w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"787\" height=\"437\" src=\"https:\/\/ssef.ch\/wp-content\/uploads\/2020\/04\/Capture.jpg\" alt=\"\" class=\"wp-image-3548\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/Capture.jpg 787w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/Capture-300x167.jpg 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/Capture-768x426.jpg 768w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/Capture-700x389.jpg 700w\" sizes=\"(max-width: 787px) 100vw, 787px\" \/><\/figure>\n\n\n","protected":false},"excerpt":{"rendered":"<p>In early 2016, attractive bright purple garnets arrived at SSEF in Bangkok, Basel and Hong Kong. Based on client information, they are from a new mine, Padagaga in the Chimoio area in Mozambique,  which was discovered recently.<\/p>\n","protected":false},"author":3,"featured_media":3546,"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":[742,736],"library_category":[],"library_author":[],"class_list":["post-3545","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-blog","tag-gemmology","tag-othergemstones"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Purple Mozambique Garnet - 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\/purple-mozambique-garnet\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Purple Mozambique Garnet - SSEF\" \/>\n<meta property=\"og:description\" content=\"In early 2016, attractive bright purple garnets arrived at SSEF in Bangkok, Basel and Hong Kong. Based on client information, they are from a new mine, Padagaga in the Chimoio area in Mozambique, which was discovered recently.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ssef.ch\/purple-mozambique-garnet\/\" \/>\n<meta property=\"og:site_name\" content=\"SSEF\" \/>\n<meta property=\"article:published_time\" content=\"2020-04-25T14:55:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-11-02T14:28:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2020\/04\/403-Fig-1.-three-purple-garnet-jpg.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1100\" \/>\n\t<meta property=\"og:image:height\" content=\"547\" \/>\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=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Laurent Cartier\" \/>\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.ssef.ch\\\/purple-mozambique-garnet\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/purple-mozambique-garnet\\\/\"},\"author\":{\"name\":\"Laurent Cartier\",\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/zh-hans\\\/#\\\/schema\\\/person\\\/c855f01c061d2c7b29f823eaee439288\"},\"headline\":\"Purple Mozambique Garnet\",\"datePublished\":\"2020-04-25T14:55:00+00:00\",\"dateModified\":\"2022-11-02T14:28:18+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/purple-mozambique-garnet\\\/\"},\"wordCount\":216,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/zh-hans\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/purple-mozambique-garnet\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ssef.ch\\\/wp-content\\\/uploads\\\/2020\\\/04\\\/403-Fig-1.-three-purple-garnet-jpg.webp\",\"keywords\":[\"Gemmology\",\"Other Gemstones\"],\"articleSection\":[\"Research Blog\"],\"inLanguage\":\"jp\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ssef.ch\\\/purple-mozambique-garnet\\\/\",\"url\":\"https:\\\/\\\/www.ssef.ch\\\/purple-mozambique-garnet\\\/\",\"name\":\"Purple Mozambique Garnet - 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